def set_max_recursion(self, level):
import gramfuzz.fields<EOL>gramfuzz.fields.Ref.max_recursion = level<EOL>
Set the maximum reference-recursion depth (not the Python system maximum stack
        recursion level). This controls how many levels deep of nested references are allowed
        before gramfuzz attempts to generate the shortest (reference-wise) rules possible.

        :param int level: The new maximum reference level