parameters: (self, prefix, uri)
docstring: Begin the scope of a prefix-URI Namespace mapping.
  
          The information from this event is not necessary for normal
          Namespace processing: the SAX XML reader will automatically
          replace prefixes for element and attribute names when the
          http://xml.org/sax/features/namespaces feature is true (the
          default).
  
          There are cases, however, when applications need to use
          prefixes in character data or in attribute values, where they
          cannot safely be expanded automatically; the
          start/endPrefixMapping event supplies the information to the
          application to expand prefixes in those contexts itself, if
          necessary.
  
          Note that start/endPrefixMapping events are not guaranteed to
          be properly nested relative to each-other: all
          startPrefixMapping events will occur before the corresponding
          startElement event, and all endPrefixMapping events will occur
          after the corresponding endElement event, but their order is
          not guaranteed.
docstring_summary: Begin the scope of a prefix-URI Namespace mapping.
docstring_tokens: Begin the scope of a prefix - URI Namespace mapping .
function: def startPrefixMapping(self, prefix, uri):
          """Begin the scope of a prefix-URI Namespace mapping.
  
          The information from this event is not necessary for normal
          Namespace processing: the SAX XML reader will automatically
          replace prefixes for element and attribute names when the
          http://xml.org/sax/features/namespaces feature is true (the
          default).
  
          There are cases, however, when applications need to use
          prefixes in character data or in attribute values, where they
          cannot safely be expanded automatically; the
          start/endPrefixMapping event supplies the information to the
          application to expand prefixes in those contexts itself, if
          necessary.
  
          Note that start/endPrefixMapping events are not guaranteed to
          be properly nested relative to each-other: all
          startPrefixMapping events will occur before the corresponding
          startElement event, and all endPrefixMapping events will occur
          after the corresponding endElement event, but their order is
          not guaranteed."""
function_tokens: def startPrefixMapping ( self , prefix , uri ) :