code: def nextSibling(self):
          '''
              nextSibling - Returns the next sibling. This is the child following this node in the parent's list of children.
  
                      This could be text or an element. use nextSiblingElement to ensure element
  
                  @return <None/str/AdvancedTag> - None if there are no nodes (text or tag) in the parent after this node,
                                                      Otherwise the following node (text or tag)
          '''
          parentNode = self.parentNode
  
          # If no parent, no siblings.
          if not parentNode:
              return None
  
          # Determine index in blocks
          myBlockIdx = parentNode.blocks.index(self)
  
          # If we are the last, no next sibling
          if myBlockIdx == len(parentNode.blocks) - 1:
              return None
  
          # Else, return the next block in parent
          return parentNode.blocks[ myBlockIdx + 1 f nextSibling(self):
          '''
              nextSibling - Returns the next sibling. This is the child following this node in the parent's list of children.
  
                      This could be text or an element. use nextSiblingElement to ensure element
  
                  @return <None/str/AdvancedTag> - None if there are no nodes (text or tag) in the parent after this node,
                                                      Otherwise the following node (text or tag)
          '''
          parentNode = self.parentNode
  
          # If no parent, no siblings.
          if not parentNode:
              return None
  
          # Determine index in blocks
          myBlockIdx = parentNode.blocks.index(self)
  
          # If we are the last, no next sibling
          if myBlockIdx == len(parentNode.blocks) - 1:
              return None
  
          # Else, return the next block in parent
          return parentNode.blocks[ myBlockIdx + 1 ]
docs: nextSibling - Returns the next sibling. This is the child following this node in the parent's list of children.
  
                      This could be text or an element. use nextSiblingElement to ensure element
  
                  @return <None/str/AdvancedTag> - None if there are no nodes (text or tag) in the parent after this node,
                                                      Otherwise the following node (text or tag)