References: google.golang.org/protobuf/internal/genid.FieldOptions_Targets_field

const google.golang.org/protobuf/internal/genid.FieldOptions_Targets_field_number

one use

	google.golang.org/protobuf/internal/genid (current package)
		descriptor_gen.go#L687: 	FieldOptions_Targets_field_number             protoreflect.FieldNumber = 19

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