Add missing properties to xml.dom.minidom (#6526)

stdlib/xml/dom/minidom.pyi

@@ -70,6 +70,10 @@ class Attr(Node):
         self, qName: str, namespaceURI: str | None = ..., localName: Any | None = ..., prefix: Any | None = ...
     ) -> None: ...
     def unlink(self) -> None: ...
+    @property
+    def isId(self) -> bool: ...
+    @property
+    def schemaType(self) -> Any: ...
 
 class NamedNodeMap:
     def __init__(self, attrs, attrsNS, ownerElement) -> None: ...
@@ -96,6 +100,8 @@ class NamedNodeMap:
     def setNamedItem(self, node): ...
     def setNamedItemNS(self, node): ...
     def __delitem__(self, attname_or_tuple) -> None: ...
+    @property
+    def length(self) -> int: ...
 
 AttributeList = NamedNodeMap
 
@@ -110,6 +116,7 @@ class Element(Node):
     schemaType: Any
     parentNode: Any
     tagName: str
+    nodeName: str
     prefix: Any
     namespaceURI: str | None
     childNodes: Any
@@ -139,6 +146,8 @@ class Element(Node):
     def setIdAttribute(self, name) -> None: ...
     def setIdAttributeNS(self, namespaceURI: str, localName) -> None: ...
     def setIdAttributeNode(self, idAttr) -> None: ...
+    @property
+    def attributes(self) -> NamedNodeMap: ...
 
 class Childless:
     attributes: Any
@@ -173,6 +182,8 @@ class CharacterData(Childless, Node):
     def insertData(self, offset: int, arg: str) -> None: ...
     def deleteData(self, offset: int, count: int) -> None: ...
     def replaceData(self, offset: int, count: int, arg: str) -> None: ...
+    @property
+    def length(self) -> int: ...
 
 class Text(CharacterData):
     nodeType: Any
@@ -182,6 +193,10 @@ class Text(CharacterData):
     def splitText(self, offset): ...
     def writexml(self, writer, indent: str = ..., addindent: str = ..., newl: str = ...) -> None: ...
     def replaceWholeText(self, content): ...
+    @property
+    def isWhitespaceInElementContent(self) -> bool: ...
+    @property
+    def wholeText(self) -> str: ...
 
 class Comment(CharacterData):
     nodeType: Any
@@ -205,15 +220,17 @@ class ReadOnlySequentialNamedNodeMap:
     def removeNamedItemNS(self, namespaceURI: str, localName) -> None: ...
     def setNamedItem(self, node) -> None: ...
     def setNamedItemNS(self, node) -> None: ...
+    @property
+    def length(self) -> int: ...
 
-class Identified: ...
+class Identified:
+    publicId: Any
+    systemId: Any
 
 class DocumentType(Identified, Childless, Node):
     nodeType: Any
     nodeValue: Any
     name: Any
-    publicId: Any
-    systemId: Any
     internalSubset: Any
     entities: Any
     notations: Any