Members defined on an interface with the 'DynamicInterfaceCastableImplementationAttribute' should be 'static'

Since a type that implements IDynamicInterfaceCastable might not implement a dynamic interface in metadata, calls to an instance interface member that is not an explicit implementation defined on this type are likely to fail at runtime. Mark new interface members static to avoid runtime errors.

An interface member isn't explicitly implemented or marked static.

Mark the interface member static.

Do not suppress a warning from this rule.