//	10	meth[2]
		//	12	modtime[2]
		//	14	moddate[2]
		//	16	crc[4]
		//	20	csize[4]
		//	24	uncsize[4]
		//	28	namelen[2]
		//	30	xlen[2]
		//	32	fclen[2]
		//	34	disknum[2]
		//	36	iattr[2]
		//	38	eattr[4]
		//	42	off[4]
		//	46	name[namelen]
		//	46+namelen+xlen+fclen - next header
		//
		if get4(buf) != zcheader {
			break
		}
		meth := get2(buf[10:])
		size := get4(buf[24:])

  op: "Conv2D"
  input: "input"
  input: "MobilenetV1/Conv2d_0/weights/read"
  attr {
    key: "T"
    value {
      type: DT_FLOAT
    }
  }
  attr {
    key: "padding"
    value {
      s: "SAME"
    }
  }
  attr {
    key: "strides"
    value {
      list {
        i: 1
        i: 2
        i: 2
        i: 1
      }
    }
  }
}
node {

	BFalse bool    `xml:",attr"`
	BTrue  bool    `xml:",attr"`
	I      int     `xml:",attr"`
	INeg   int     `xml:",attr"`
	I8     int8    `xml:",attr"`
	I8Neg  int8    `xml:",attr"`
	I16    int16   `xml:",attr"`
	I16Neg int16   `xml:",attr"`
	I32    int32   `xml:",attr"`
	I32Neg int32   `xml:",attr"`
	I64    int64   `xml:",attr"`
	I64Neg int64   `xml:",attr"`
	UI     uint    `xml:",attr"`

			attr = attrURL
		case contentTypeCSS:
			attr = attrStyle
		case contentTypeJS:
			attr = attrScript
		case contentTypeSrcset:
			attr = attrSrcset
		}
	}

	if j == len(s) {
		state = stateAttrName
	} else {
		state = stateAfterName
	}
	return context{state: state, element: c.element, attr: attr}, j
}

// tAttrName is the context transition function for stateAttrName.

		// Recur to read element into slice.
		if err := d.unmarshalAttr(val.Index(n), attr); err != nil {
			val.SetLen(n)
			return err
		}
		return nil
	}

	if val.Type() == attrType {
		val.Set(reflect.ValueOf(attr))
		return nil
	}

	return copyValue(val, []byte(attr.Value))
}

var (
	attrType            = reflect.TypeFor[Attr]()
	unmarshalerType     = reflect.TypeFor[Unmarshaler]()

func (p *printer) marshalAttr(start *StartElement, name Name, val reflect.Value) error {
	if val.CanInterface() && val.Type().Implements(marshalerAttrType) {
		attr, err := val.Interface().(MarshalerAttr).MarshalXMLAttr(name)
		if err != nil {
			return err
		}
		if attr.Name.Local != "" {
			start.Attr = append(start.Attr, attr)
		}
		return nil
	}

	AttrHighpc         Attr = 0x12
	AttrLanguage       Attr = 0x13
	AttrDiscr          Attr = 0x15
	AttrDiscrValue     Attr = 0x16
	AttrVisibility     Attr = 0x17
	AttrImport         Attr = 0x18
	AttrStringLength   Attr = 0x19
	AttrCommonRef      Attr = 0x1A
	AttrCompDir        Attr = 0x1B
	AttrConstValue     Attr = 0x1C
	AttrContainingType Attr = 0x1D
	AttrDefaultValue   Attr = 0x1E
	AttrInline         Attr = 0x20

          is_ref: true
        }
        attr {
          name: "shape"
          type: "shape"
        }
        attr {
          name: "dtype"
          type: "type"
        }
        attr {
          name: "container"
          type: "string"
          default_value {
            s: ""
          }
        }
        attr {
          name: "shared_name"
          type: "string"

  attr {
    key: "T"
    value {
      type: DT_FLOAT
    }
  }
  attr {
    key: "transpose_a"
    value {
      b: false
    }
  }
  attr {
    key: "transpose_b"
    value {
      b: false
    }
  }
}
node {
  name: "sequential/quant_dense/BiasAdd/ReadVariableOp/resource"
  op: "Const"
  attr {
    key: "dtype"
    value {

	// remove all Attrs
	removeAll := func(_ []string, a Attr) Attr { return Attr{} }

	attrs := []Attr{String("a", "one"), Int("b", 2), Any("", nil)}
	preAttrs := []Attr{Int("pre", 3), String("x", "y")}

	for _, test := range []struct {
		name      string
		replace   func([]string, Attr) Attr
		addSource bool
		with      func(Handler) Handler
		preAttrs  []Attr
		attrs     []Attr
		wantText  string
		wantJSON  string
	}{