class InsetMathAMSArray;
class InsetMathBrace;
class InsetMathChar;
+class InsetMathClass;
class InsetMathDelim;
class InsetMathFracBase;
class InsetMathFrac;
virtual InsetMathBrace * asBraceInset() { return nullptr; }
virtual InsetMathBrace const * asBraceInset() const { return nullptr; }
virtual InsetMathChar const * asCharInset() const { return nullptr; }
+ virtual InsetMathClass const * asClassInset() const { return nullptr; }
virtual InsetMathDelim * asDelimInset() { return nullptr; }
virtual InsetMathDelim const * asDelimInset() const { return nullptr; }
virtual InsetMathFracBase * asFracBaseInset() { return nullptr; }