//
// An empty method means "GET".
//
// The provided body may be nil. If the body is of type *bytes.Reader,
// *strings.Reader, or *bytes.Buffer, the Request.ContentLength is
// set.
//
// NewRequest panics on error for ease of use in testing, where a
// panic is acceptable.
//
// To generate a client HTTP request instead of a server request, see
// the NewRequest function in the net/http package.

func (b *Block) Return() (ret *ast.ReturnStmt) {
	if len(b.Nodes) > 0 {
		ret, _ = b.Nodes[len(b.Nodes)-1].(*ast.ReturnStmt)
	}
	return
}

// Format formats the control-flow graph for ease of debugging.
func (g *CFG) Format(fset *token.FileSet) string {
	var buf bytes.Buffer
	for _, b := range g.Blocks {
		fmt.Fprintf(&buf, ".%d: # %s\n", b.Index, b.comment(fset))
		for _, n := range b.Nodes {