\brief Retrieve the category number for this diagnostic.
Diagnostics can be categorized into groups along with other, related
diagnostics (e.g., diagnostics under the same warning flag). This routine
retrieves the category number for the given diagnostic.
\returns The number of the category that contains this diagnostic, or zero
if this diagnostic is uncategorized.
\brief Retrieve the category number for this diagnostic.
Diagnostics can be categorized into groups along with other, related diagnostics (e.g., diagnostics under the same warning flag). This routine retrieves the category number for the given diagnostic.
\returns The number of the category that contains this diagnostic, or zero if this diagnostic is uncategorized.