LABEL_REQUIRED constant

FieldDescriptorProto_Label const LABEL_REQUIRED

The required label is only allowed in google.protobuf. In proto3 and Editions it's explicitly prohibited. In Editions, the field_presence feature can be used to get this behavior.

Implementation

static const FieldDescriptorProto_Label LABEL_REQUIRED =
    FieldDescriptorProto_Label._(2, _omitEnumNames ? '' : 'LABEL_REQUIRED');