你如何以编程方式识别存储过程的依赖关系？

Is it possible to write a PL/SQL query to identify a complete list of a stored procedures dependencies? I'm only interested in identifying other stored procedures and I'd prefer not to limit the depth of nesting that it gets too either. For example, if A calls B, which calls C, which calls D, I'd want B, C and D reported as dependencies for A.Is it possible to write a PL/SQL query to ident