public Builder mergeFrom(com.google.monitoring.v3.AlertPolicy.Documentation other) { if (other == com.google.monitoring.v3.AlertPolicy.Documentation.getDefaultInstance()) return this; if (!other.getContent().isEmpty()) { content_ = other.content_; onChanged(); } if (!other.getMimeType().isEmpty()) { mimeType_ = other.mimeType_; onChanged(); } this.mergeUnknownFields(other.unknownFields); onChanged(); return this; }