updateMask property

FieldMask? updateMask
final

Required. Field mask that specifies the fields in bucket that need an update. A bucket field will be overwritten if, and only if, it is in the update mask. name and output only fields cannot be updated.

For a detailed FieldMask definition, see: https://developers.google.cn/protocol-buffers/docs/reference/google.protobuf#google.protobuf.FieldMask

For example: updateMask=retention_days

Implementation

final FieldMask? updateMask;