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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def parseTree(self, root, state: ParseState) -> List[Dict]: """ Parses the XML ast tree recursively to generate a JSON AST which can be ingested by other scripts to generate Python scripts. Args: root: The current root of the tree. state: The current state of the tree defined by an object of the ParseState class. Returns: ast: A JSON ast that defines the structure of the Fortran file. """


        if root.tag in self.AST_TAG_HANDLERS:
            return self.AST_TAG_HANDLERS[root.tag](root, state)

        elif root.tag in self.libRtns:
            return self.process_libRtn(root, state)

        else:
            prog = []
            for node in root:
                prog += self.parseTree(node, state)
            return prog