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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 _is_free_link_end(self, this, next):
 """Return whether the current head is the end of a free link."""

        # Built from _parse()'s end sentinels:
        after, ctx = self._read(2), self._context
        equal_sign_contexts = contexts.TEMPLATE_PARAM_KEY | contexts.HEADING
        return (this in (self.END, "\n", "[", "]", "<", ">") or
                this == next == "'" or
                (this == "|" and ctx & contexts.TEMPLATE) or
                (this == "=" and ctx & equal_sign_contexts) or
                (this == next == "}" and ctx & contexts.TEMPLATE) or
                (this == next == after == "}" and ctx & contexts.ARGUMENT))