func isCall(t ast.Expr, pkg, name string) bool {
	call, ok := t.(*ast.CallExpr)
	return ok && isPkgDot(call.Fun, pkg, name)
}
func isCall(t ast.Expr, pkg, name string) bool {
	call, ok := t.(*ast.CallExpr)
	return ok && isPkgDot(call.Fun, pkg, name)
}
func isCall ( t ast . Expr , pkg , name string ) bool { call , ok := t . ( * ast . CallExpr ) return ok && isPkgDot ( call . Fun , pkg , name ) }
// isCall returns true if t is a call to pkg.name.
isCall returns true if t is a call to pkg . name .