### System parameter configuration A system parameter is a special kind of parameter defined by the API system, not by an individual API. It is typically mapped to an HTTP header and/or a URL query parameter. This configuration specifies which methods change the names of the system parameters.

Generated from protobuf message google.api.SystemParameters

CloneableInstantiable
ExtendsGoogle\Protobuf\Internal\Message
Methods
public __construct( $data = NULL)
 
Constructor.

    public Google\Protobuf\Internal\Message::byteSize()
     


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    public Google\Protobuf\Internal\Message::clear()
    public Google\Protobuf\Internal\Message::discardUnknownFields()
    public getRules()
     
    Define system parameters.

    The parameters defined here will override the default parameters
    implemented by the system. If this field is missing from the service
    config, default system parameters will be used. Default system parameters
    and names is implementation-dependent.
    Example: define api key for all methods

    system_parameters
      rules:
        - selector: "*"
          parameters:
            - name: api_key
              url_query_parameter: api_key
    

    Example: define 2 api key names for a specific method.

    system_parameters
      rules:
        - selector: "/ListShelves"
          parameters:
            - name: api_key
              http_header: Api-Key1
            - name: api_key
              http_header: Api-Key2
    

    NOTE: All service configuration rules follow "last one wins" order.

    Generated from protobuf field repeated .google.api.SystemParameterRule rules = 1;

    public Google\Protobuf\Internal\Message::jsonByteSize()
     


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    public Google\Protobuf\Internal\Message::mergeFrom( $msg)
    public Google\Protobuf\Internal\Message::mergeFromJsonString( $data)
    public Google\Protobuf\Internal\Message::mergeFromString( $data)
    public Google\Protobuf\Internal\Message::parseFromJsonStream( $input)
     


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    public Google\Protobuf\Internal\Message::parseFromStream( $input)
     


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    public Google\Protobuf\Internal\Message::serializeToJsonStream( $output)
     


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    public Google\Protobuf\Internal\Message::serializeToJsonString()
     
    Serialize the message to json string.

    • return string Serialized json protobuf data.
    public Google\Protobuf\Internal\Message::serializeToStream( $output)
     


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    public Google\Protobuf\Internal\Message::serializeToString()
     
    Serialize the message to string.

    • return string Serialized binary protobuf data.
    public setRules( $var)
     
    Define system parameters.

    The parameters defined here will override the default parameters
    implemented by the system. If this field is missing from the service
    config, default system parameters will be used. Default system parameters
    and names is implementation-dependent.
    Example: define api key for all methods

    system_parameters
      rules:
        - selector: "*"
          parameters:
            - name: api_key
              url_query_parameter: api_key
    

    Example: define 2 api key names for a specific method.

    system_parameters
      rules:
        - selector: "/ListShelves"
          parameters:
            - name: api_key
              http_header: Api-Key1
            - name: api_key
              http_header: Api-Key2
    

    NOTE: All service configuration rules follow "last one wins" order.

    Generated from protobuf field repeated .google.api.SystemParameterRule rules = 1;

    • return $this
    Methods
    protected Google\Protobuf\Internal\Message::mergeFromArray(array $array)
    protected Google\Protobuf\Internal\Message::mergeFromJsonArray( $array)
    protected Google\Protobuf\Internal\Message::readOneof( $number)
    protected Google\Protobuf\Internal\Message::readWrapperValue( $member)
    protected Google\Protobuf\Internal\Message::whichOneof( $oneof_name)
    protected Google\Protobuf\Internal\Message::writeOneof( $number, $value)
    protected Google\Protobuf\Internal\Message::writeWrapperValue( $member, $value)
    Properties
    private $rules
     
    Define system parameters.

    The parameters defined here will override the default parameters
    implemented by the system. If this field is missing from the service
    config, default system parameters will be used. Default system parameters
    and names is implementation-dependent.
    Example: define api key for all methods

    system_parameters
      rules:
        - selector: "*"
          parameters:
            - name: api_key
              url_query_parameter: api_key
    

    Example: define 2 api key names for a specific method.

    system_parameters
      rules:
        - selector: "/ListShelves"
          parameters:
            - name: api_key
              http_header: Api-Key1
            - name: api_key
              http_header: Api-Key2
    

    NOTE: All service configuration rules follow "last one wins" order.

    Generated from protobuf field repeated .google.api.SystemParameterRule rules = 1;

    Methods
    private Google\Protobuf\Internal\Message::appendHelper( $field, $append_value)
    private Google\Protobuf\Internal\Message::convertJsonValueToProtoValue( $value, $field, $is_map_key = false)
    private Google\Protobuf\Internal\Message::defaultValue( $field)
     


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    private Google\Protobuf\Internal\Message::existField( $field)
     


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    private Google\Protobuf\Internal\Message::fieldByteSize( $field)
     


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    private Google\Protobuf\Internal\Message::fieldDataOnlyByteSize( $field, $value)
     


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    private Google\Protobuf\Internal\Message::fieldDataOnlyJsonByteSize( $field, $value)
     


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    private Google\Protobuf\Internal\Message::fieldJsonByteSize( $field)
     


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    private Google\Protobuf\Internal\Message::initWithDescriptor(Google\Protobuf\Internal\Descriptor $desc)
     


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    private Google\Protobuf\Internal\Message::initWithGeneratedPool()
     


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    private Google\Protobuf\Internal\Message::kvUpdateHelper( $field, $update_key, $update_value)
    private Google\Protobuf\Internal\Message::mergeFromArrayJsonImpl( $array)
    private static Google\Protobuf\Internal\Message::normalizeArrayElementsToMessageType( $value, $class)
     
    Tries to normalize the elements in $value into a provided protobuf wrapper type $class. If $value is any type other than array, we do not do any conversion, and instead rely on the existing protobuf type checking. If $value is an array, we process each element and try to convert it to an instance of $class.

      private static Google\Protobuf\Internal\Message::normalizeToMessageType( $value, $class)
       
      Tries to normalize $value into a provided protobuf wrapper type $class.

      If $value is any type other than an object, we attempt to construct an
      instance of $class and assign $value to it using the setValue method
      shared by all wrapper types.

      This method will raise an error if it receives a type that cannot be
      assigned to the wrapper type via setValue.

        private Google\Protobuf\Internal\Message::parseFieldFromStream( $tag, $input, $field)
         


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        private static Google\Protobuf\Internal\Message::parseFieldFromStreamNoTag( $input, $field, $value)
         


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        private Google\Protobuf\Internal\Message::repeatedFieldDataOnlyByteSize( $field)
         


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        private Google\Protobuf\Internal\Message::serializeFieldToJsonStream( $output, $field)
         


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        private Google\Protobuf\Internal\Message::serializeFieldToStream( $output, $field)
         


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        private Google\Protobuf\Internal\Message::serializeMapFieldToStream( $field, $output)
         


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        private Google\Protobuf\Internal\Message::serializeRepeatedFieldToStream( $field, $output)
         


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        private Google\Protobuf\Internal\Message::serializeSingularFieldToStream( $field, $output)
         


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        private Google\Protobuf\Internal\Message::skipField( $input, $tag)
         


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        Methods
        private static Google\Protobuf\Internal\Message::normalizeArrayElementsToMessageType( $value, $class)
         
        Tries to normalize the elements in $value into a provided protobuf wrapper type $class. If $value is any type other than array, we do not do any conversion, and instead rely on the existing protobuf type checking. If $value is an array, we process each element and try to convert it to an instance of $class.

          private static Google\Protobuf\Internal\Message::normalizeToMessageType( $value, $class)
           
          Tries to normalize $value into a provided protobuf wrapper type $class.

          If $value is any type other than an object, we attempt to construct an
          instance of $class and assign $value to it using the setValue method
          shared by all wrapper types.

          This method will raise an error if it receives a type that cannot be
          assigned to the wrapper type via setValue.

            private static Google\Protobuf\Internal\Message::parseFieldFromStreamNoTag( $input, $field, $value)
             


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