-(_:)
Google_Protobuf_Duration+Extensions.swift:251func - (operand: Google_Protobuf_Duration) -> Google_Protobuf_Duration func - (operand: Google_Protobuf_Duration) -> Google_Protobuf_Duration import SwiftProtobufSupport library for Swift code generated by protoc-gen-swift.
struct Google_Protobuf_DurationA Duration represents a signed, fixed-length span of time represented as a count of seconds and fractions of seconds at nanosecond resolution. It is independent of any calendar and concepts like “day” or “month”. It is related to Timestamp in that the difference between two Timestamp values is a Duration and it can be added or subtracted from a Timestamp. Range is approximately +-10,000 years.