"     mtype: "<type \'property\'>"   }   member {     name: "inbound_nodes"     mtype: "<type \'property\'>"   }   member {     name: "input"     mtype: "<type \'property\'>"   }   member {     name: "input_mask"     mtype: "<type \'property\'>"   }   member {     name: "input_shape"     mtype: "<type \'property\'>"   }   member {     name: "