Unsupported Swift Version - for Speech

[maciaspeter]

Please execute this shell command then replace it with your console output.

ProductName: Mac OS X
ProductVersion: 10.14.4
BuildVersion: 18E226
pod --version 1.5.3
speech/Swift/Speech-gRPC-Streaming/Podfile
pwd - /ios-docs-samples/speech/Swift/Speech-gRPC-Streaming

Problem | Feature

The target “Speech” contains source code developed with Swift 3.x. This version of Xcode does not support building or migrating Swift 3.x targets.
Use Xcode 10.1 to migrate the code to Swift 4.