func (r renderer) Entity(out *bytes.Buffer, entity []byte) {
	out.Write(entity)
}
Lowlevel callbacks
Entity callback.  Outputs a simple plain-text version of the input.
package summary
import (
	"bytes"
	"github.com/russross/blackfriday"
)
var _ blackfriday.Renderer = (*renderer)(nil)
type renderer struct{}
func (r renderer) BlockCode(out *bytes.Buffer, text []byte, land string) {}
func (r renderer) BlockQuote(out *bytes.Buffer, text []byte) {}
func (r renderer) BlockHtml(out *bytes.Buffer, text []byte) {}
func (r renderer) Header(out *bytes.Buffer, text func() bool, level int, id string) {}
func (r renderer) HRule(out *bytes.Buffer) {}
func (r renderer) List(out *bytes.Buffer, text func() bool, flags int) {
	marker := out.Len()
	if !text() {
		out.Truncate(marker)
	}
	out.Write([]byte{' '})
}
func (r renderer) ListItem(out *bytes.Buffer, text []byte, flags int) {}
func (r renderer) Paragraph(out *bytes.Buffer, text func() bool) {
	marker := out.Len()
	if !text() {
		out.Truncate(marker)
	}
	out.Write([]byte{' '})
}
func (r renderer) Table(out *bytes.Buffer, header []byte, body []byte, columnData []int) {}
func (r renderer) TableRow(out *bytes.Buffer, text []byte) {}
func (r renderer) TableHeaderCell(out *bytes.Buffer, text []byte, flags int) {}
func (r renderer) TableCell(out *bytes.Buffer, text []byte, flags int) {}
func (r renderer) Footnotes(out *bytes.Buffer, text func() bool) {}
func (r renderer) FootnoteItem(out *bytes.Buffer, name, text []byte, flags int) {}
func (r renderer) TitleBlock(out *bytes.Buffer, text []byte) {}
func (r renderer) AutoLink(out *bytes.Buffer, link []byte, kind int) {}
func (r renderer) CodeSpan(out *bytes.Buffer, text []byte) {
	out.Write([]byte("`"))
	out.Write(text)
	out.Write([]byte("`"))
}
func (r renderer) DoubleEmphasis(out *bytes.Buffer, text []byte) {
	out.Write(text)
}
func (r renderer) Emphasis(out *bytes.Buffer, text []byte) {
	out.Write(text)
}
func (r renderer) Image(out *bytes.Buffer, link []byte, title []byte, alt []byte) {}
func (r renderer) LineBreak(out *bytes.Buffer) {}
func (r renderer) Link(out *bytes.Buffer, link []byte, title []byte, content []byte) {
	out.Write(content)
}
func (r renderer) RawHtmlTag(out *bytes.Buffer, tag []byte) {}
func (r renderer) TripleEmphasis(out *bytes.Buffer, text []byte) {
	out.Write(text)
}
func (r renderer) StrikeThrough(out *bytes.Buffer, text []byte) {}
func (r renderer) FootnoteRef(out *bytes.Buffer, ref []byte, id int) {}