title: Overriding permission required by AbpAuthorize attribute
body: <p>I get the concept of Permissions, Roles and Authorization. But I can't get a grip of how the Authorization works when added in multiple places. Let me explain.</p>
  
  <p>I have an application service class with the attribute:
  <code>[AbpAuthorize(PermissionNames.A)]</code>
  Within that class I have a method with the following attribute:
  <code>[AbpAuthorize(PermissionNames.B)]</code></p>
  
  <p>In my world the B-permission should override the A-permission, but does it? To me it does not feel like it. Is there a way for me to accomplish the same functionality? To make it even more complex, the A-permission is a <code>MultiTenancySides.Host</code> permission, and B is not.</p>
  
  <p>Thanks!</p>