google.protobuf 中定义的类型

Any (message)
Api (message)
BoolValue (message)
BytesValue (message)
DoubleValue (message)
Duration (message)
Empty (message)
Enum (message)
EnumValue (message)
Field (message)
Field.Cardinality (enum)
Field.Kind (enum)
FieldMask (message)
FloatValue (message)
Int32Value (message)
Int64Value (message)
ListValue (message)
Method (message)
Mixin (message)
NullValue (enum)
Option (message)
SourceContext (message)
StringValue (message)
Struct (message)
Syntax (enum)
Timestamp (message)
Type (message)
UInt32Value (message)
UInt64Value (message)
Value (message)