code: func GetKnownAPIVersions() []DockerVersion {
  	return []DockerVersion{
  		Version_1_17,
  		Version_1_18,
  		Version_1_19,
  		Version_1_20,
  		Version_1_21,
  		Version_1_22,
  		Version_1_23,
  		Version_1_24,
  		Version_1_25,
  		Version_1_26,
  		Version_1_27,
  		Version_1_28,
  		Version_1_29,
  		Version_1_30,
  		Version_1_31,
  		Version_1_32,
  	}
  }
docs: // GetKnownAPIVersions returns all of the API versions that we know about.
  // It doesn't care if the version is supported by Docker or ECS agent