def build_tree(self, *args, **kwargs):
<EOL>assert len(self) > <NUM_LIT:3><EOL>algorithm = kwargs.pop(kwargs, None)<EOL>if algorithm is None: algorithm = '<STR_LIT>'<EOL>if algorithm is '<STR_LIT>':    return self.build_tree_raxml(*args, **kwargs)<EOL>if algorithm is '<STR_LIT>': return self.build_tree_fast(*args, **kwargs)<EOL>
Dispatch a tree build call. Note that you need at least four
        taxa to express some evolutionary history on an unrooted tree.