return ok && analysisutil.IsNamedType(ptr.Elem(), "net/http", "Client") // method on *http.Client.
}

// restOfBlock, given a traversal stack, finds the innermost containing
// block and returns the suffix of its statements starting with the current
// node, along with the number of call expressions encountered.
func restOfBlock(stack []ast.Node) ([]ast.Stmt, int) {
	var ncalls int
	for i := len(stack) - 1; i >= 0; i-- {