The <cxxClassDefinitionFileLineStart> element specifies the beginning of the class definition.
The <cxxClassDefinitionFileLineStart> element is defined within <cxxClassAPIItemLocation>. It contains the line number that the class definition begins on. The element is empty but for the required attributes name and value. The attribute name must be set to "lineNumber". The attribute value is set to the line number where the class definition begins.
<cxxClassAPIItemLocation> <cxxClassDeclarationFile name="filePath" value="D:/include/headerfile.h"/> <cxxClassDeclarationFileLine name="lineNumber" value="775"/> <cxxClassDefinitionFile name="filePath" value="D:/include/headerfile.h"/> <cxxClassDefinitionFileLineStart name="lineNumber" value="765"/> <cxxClassDefinitionFileLineEnd name="lineNumber" value="787"/> </cxxClassAPIItemLocation>