如何从FullTrust程序集中停止CAS安全性要求

I have a FullTrust assembly, Assembly A, which calls a 3rd party component, Assembly B. Is there any way I can, via A.dll.config or in A's code, prevent any CAS demands from propagating up the stack to Assembly B, which does not have FullTrust?I have a FullTrust assembly, Assembly A, which