-215 Taking the address of a parameter in an iterator is not allowed.
-216 Can not use a type parameters as base class
+
+-217 Wrong number of type parameters
+
+-218 Invalid constraints clause
+
+-219 Type argument doesn't meet constraints.
+
+-220 Cannot resolve constructed type
+
+-221 params modifier present in anonymous method declaration
+
+-222 yield statement only available in C# 2.0 mode
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