String buffer Append-only strings. A utility class that allows easy construction of strings that grow at the end by appending new strings. Primarily used for constructing/serializing syntaxes into strings by the #raptor_iostream and #raptor_serializer classes. @Returns: @stringbuffer: @stringbuffer: @string: @length: @do_copy: @Returns: @stringbuffer: @string: @do_copy: @Returns: @stringbuffer: @integer: @Returns: @stringbuffer: @append: @Returns: @stringbuffer: @string: @length: @do_copy: @Returns: @stringbuffer: @string: @do_copy: @Returns: @stringbuffer: @Returns: @stringbuffer: @Returns: @stringbuffer: @string: @length: @Returns: