OXOR:
		n := n.(*BinaryExpr)
		exprFmt(n.X, s, nprec)
		fmt.Fprintf(s, " %v ", n.Op())
		exprFmt(n.Y, s, nprec+1)

	case OANDAND,
		OOROR:
		n := n.(*LogicalExpr)
		exprFmt(n.X, s, nprec)
		fmt.Fprintf(s, " %v ", n.Op())
		exprFmt(n.Y, s, nprec+1)

	case OSEND:
		n := n.(*SendStmt)
		exprFmt(n.Chan, s, nprec)
		fmt.Fprintf(s, " <- ")
		exprFmt(n.Value, s, nprec+1)

	case OADDSTR:

	}
}

const (
	// nolint: revive, stylecheck
	FmtOpenMetrics_0_0_1 = expfmt.OpenMetricsType + `; version=` + expfmt.OpenMetricsVersion_0_0_1 + `; charset=utf-8`
	// nolint: revive, stylecheck
	FmtOpenMetrics_1_0_0 = expfmt.OpenMetricsType + `; version=` + expfmt.OpenMetricsVersion_1_0_0 + `; charset=utf-8`
	FmtText              = `text/plain; version=` + expfmt.TextVersion + `; charset=utf-8`
)

		}

		if afterParallel {
			stmts = append(stmts, stmt)
			continue
		}

		// Check if stmt is a call to t.Parallel(), for the correct t.
		exprStmt, ok := stmt.(*ast.ExprStmt)
		if !ok {
			continue
		}
		expr := exprStmt.X
		if isMethodCall(info, expr, "testing", "T", "Parallel") {
			call, _ := expr.(*ast.CallExpr)
			if call == nil {
				continue
			}

		},
		{
			name:        "plaintext accept header",
			contentType: "text/plain; version=0.0.4; charset=utf-8",
			expected:    expfmt.NewFormat(expfmt.TypeTextPlain),
		},
		{
			name:        "empty accept header",
			contentType: "",
			expected:    expfmt.NewFormat(expfmt.TypeTextPlain),
		},
	}
	for _, tt := range cases {
		t.Run(tt.name, func(t *testing.T) {

				return
			}
		}

		contentType := expfmt.Negotiate(r.Header)
		w.Header().Set("Content-Type", string(contentType))

		enc := expfmt.NewEncoder(w, contentType)
		for _, mf := range mfs {
			if err := enc.Encode(mf); err != nil {
				// client may disconnect for any reasons
				// we do not have to log this.
				return
			}
		}
		if closer, ok := enc.(expfmt.Closer); ok {
			closer.Close()
		}
	})

		// so node is the result.  Is it exact?

		// (It's tempting to put this condition before the
		// child loop, but it gives the wrong result in the
		// case where a node (e.g. ExprStmt) and its sole
		// child have equal intervals.)
		if start == nodePos && end == nodeEnd {
			return true // exact match
		}

		return false // inexact: overlaps multiple children
	}

	// A LabeledStmt node represents a labeled statement.
	LabeledStmt struct {
		Label *Ident
		Colon token.Pos // position of ":"
		Stmt  Stmt
	}

	// An ExprStmt node represents a (stand-alone) expression
	// in a statement list.
	//
	ExprStmt struct {
		X Expr // expression
	}

	// A SendStmt node represents a send statement.
	SendStmt struct {
		Chan  Expr
		Arrow token.Pos // position of "<-"

	case *ast.BadStmt,
		*ast.SendStmt,
		*ast.IncDecStmt,
		*ast.GoStmt,
		*ast.DeferStmt,
		*ast.EmptyStmt,
		*ast.AssignStmt:
		// No effect on control flow.
		b.add(s)

	case *ast.ExprStmt:
		b.add(s)
		if call, ok := s.X.(*ast.CallExpr); ok && !b.mayReturn(call) {
			// Calls to panic, os.Exit, etc, never return.
			b.current = b.newBlock(KindUnreachable, s)
		}

	case *ast.DeclStmt:

	case *ast.BadStmt, *ast.EmptyStmt:
		// ignore

	case *ast.DeclStmt:
		check.declStmt(s.Decl)

	case *ast.LabeledStmt:
		check.hasLabel = true
		check.stmt(ctxt, s.Stmt)

	case *ast.ExprStmt:
		// spec: "With the exception of specific built-in functions,
		// function and method calls and receive operations can appear
		// in statement context. Such statements may be parenthesized."
		var x operand

		f.walk(&n.Value, ctxType, visit)

	case *ast.BadStmt:
	case *ast.DeclStmt:
		f.walk(n.Decl, ctxDecl, visit)
	case *ast.EmptyStmt:
	case *ast.LabeledStmt:
		f.walk(n.Stmt, ctxStmt, visit)
	case *ast.ExprStmt:
		f.walk(&n.X, ctxExpr, visit)
	case *ast.SendStmt:
		f.walk(&n.Chan, ctxExpr, visit)
		f.walk(&n.Value, ctxExpr, visit)
	case *ast.IncDecStmt:
		f.walk(&n.X, ctxExpr, visit)
	case *ast.AssignStmt: