InsertChars
BString::InsertChars(const char* string, int32 charPosition)
BString::InsertChars(const char* string, int32 charCount, int32 charPosition)
BString::InsertChars(const char* string, int32 fromCharOffset,
BString::InsertChars(const BString& string, int32 charPosition)
BString::InsertChars(const BString& string, int32 charCount, int32 charPosition)
BString::InsertChars(const BString& string, int32 fromCharOffset,