c# get_ramcache_entry()

Hello sir, I have looked at this example, but am still unsure how to call the method with the keys. Here's what I have so far:

 
iControl.LocalLBRAMCacheInformationRAMCacheKey key2 = new iControl.LocalLBRAMCacheInformationRAMCacheKey();
LocalLBRAMCacheInformationRAMCacheEntry[] RamE;
Interfaces m_interfaces = new Interfaces();
m_interfaces.initialize(ipAddress, user, pass);
                               
key2.maximum_responses = 500;
key2.profile_name = "";
RamE = m_interfaces.LocalLBRAMCacheInformation.evict_all_ramcache_entries(); <-- Not sure what to put here

I've tried entering the key2.maximum_responses and key2.profile_name, but get either invalid arguments, or method doesn't take x arguments.