Error return value of `val.DecodeStruct` is not checked (errcheck)

func `(*Client).head` is unused (unused)

func `(*Client).get` is unused (unused)

func `(*Client).put` is unused (unused)

func `(*Client).delete` is unused (unused)

func `mapDiscriminatorErrorObject` is unused (unused)

func `decodeStruct` is unused (unused)

func `mapDiscriminatorResponseMessage` is unused (unused)

func `toTimeHookFunc` is unused (unused)

SA1019: "io/ioutil" has been deprecated since Go 1.19: As of Go 1.16, the same functionality is now provided by package io or package os, and those implementations should be preferred in new code. See the specific function documentation for details. (staticcheck)