def __init__(self, channel):
self.ListContexts = channel.unary_unary(<EOL>'<STR_LIT>',<EOL>request_serializer=google_dot_cloud_dot_dialogflow__v2_dot_proto_dot_context__pb2.ListContextsRequest.SerializeToString,<EOL>response_deserializer=google_dot_cloud_dot_dialogflow__v2_dot_proto_dot_context__pb2.ListContextsResponse.FromString,<EOL>)<EOL>self.GetContext = channel.unary_unary(<EOL>'<STR_LIT>',<EOL>request_serializer=google_dot_cloud_dot_dialogflow__v2_dot_proto_dot_context__pb2.GetContextRequest.SerializeToString,<EOL>response_deserializer=google_dot_cloud_dot_dialogflow__v2_dot_proto_dot_context__pb2.Context.FromString,<EOL>)<EOL>self.CreateContext = channel.unary_unary(<EOL>'<STR_LIT>',<EOL>request_serializer=google_dot_cloud_dot_dialogflow__v2_dot_proto_dot_context__pb2.CreateContextRequest.SerializeToString,<EOL>response_deserializer=google_dot_cloud_dot_dialogflow__v2_dot_proto_dot_context__pb2.Context.FromString,<EOL>)<EOL>self.UpdateContext = channel.unary_unary(<EOL>'<STR_LIT>',<EOL>request_serializer=google_dot_cloud_dot_dialogflow__v2_dot_proto_dot_context__pb2.UpdateContextRequest.SerializeToString,<EOL>response_deserializer=google_dot_cloud_dot_dialogflow__v2_dot_proto_dot_context__pb2.Context.FromString,<EOL>)<EOL>self.DeleteContext = channel.unary_unary(<EOL>'<STR_LIT>',<EOL>request_serializer=google_dot_cloud_dot_dialogflow__v2_dot_proto_dot_context__pb2.DeleteContextRequest.SerializeToString,<EOL>response_deserializer=google_dot_protobuf_dot_empty__pb2.Empty.FromString,<EOL>)<EOL>self.DeleteAllContexts = channel.unary_unary(<EOL>'<STR_LIT>',<EOL>request_serializer=google_dot_cloud_dot_dialogflow__v2_dot_proto_dot_context__pb2.DeleteAllContextsRequest.SerializeToString,<EOL>response_deserializer=google_dot_protobuf_dot_empty__pb2.Empty.FromString,<EOL>)<EOL>
Constructor.

        Args:
          channel: A grpc.Channel.