func ExampleVar1()   {} // invalid - no support for consts and vars

func Example()               {}
func Example_()              {} // invalid - suffix must start with a lower-case letter
func Example_suffix()        {}
func Example_suffix_xX_X_x() {}
func Example_世界()           {} // invalid - suffix must start with a lower-case letter
func Example_123()           {} // invalid - suffix must start with a lower-case letter

		// Abort since obj is absent and no subsequent checks can be performed.
		return
	}
	if len(elems) < 2 {
		// Nothing more to do.
		return
	}

	if ident == "" {
		// Check Example_suffix and Example_BadSuffix.
		if residual := strings.TrimPrefix(exName, "_"); !isExampleSuffix(residual) {
			pass.Reportf(fn.Pos(), "%s has malformed example suffix: %s", fnName, residual)
		}
		return
	}

// appending a distinct suffix to the name. The suffix must start with a
// lower-case letter.
//
//	func Example_suffix() { ... }
//	func ExampleF_suffix() { ... }
//	func ExampleT_suffix() { ... }
//	func ExampleT_M_suffix() { ... }
//
// The entire test file is presented as the example when it contains a single