<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def build(self):
 """Generic entrypoint of `SymbolTableBuilder` class."""

        self.load_builtins()
        self.load_functions(self.tree)
        self.visit(self.tree)