<?xml version="1.0"?>
<ErrorDocumentation xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <ErrorName>CS0509</ErrorName>
  <Examples>
    <string>// CS0509: `InstanceClass': cannot derive from sealed type `E'
// Line: 6

public enum E {}

class InstanceClass: E {
}
</string>
    <string>// CS0509: `X': cannot derive from sealed type `V'
// Line: 8

struct V {
	int v;
}

class X : V {
}
</string>
    <string>// CS0509: `A': cannot derive from sealed type `System.Action'
// Line: 4

class A : System.Action
{
}
</string>
    <string>// CS0509: `X': cannot derive from sealed type `int'
// Line: 4

class X : int
{
}
</string>
    <string>// CS0509: `A': cannot derive from sealed type `D'
// Line: 6

delegate void D ();

class A : D
{
}
</string>
  </Examples>
</ErrorDocumentation>