docs: add missing docstrings to data_sources/gad_source.py #3466 (#3488)

fixes #3466

Co-authored-by: Terri Oda <[email protected]>

Author: btwshivam

cve_bin_tool/data_sources/gad_source.py

@@ -23,6 +23,8 @@
 
 
 class GAD_Source(Data_Source):
+    """Represents a data source for retrieving Common Vulnerabilities and Exposures (CVEs) from GitLab Advisory Database (GAD)."""
+
     SOURCE = "GAD"
     CACHEDIR = DISK_LOCATION_DEFAULT
     LOGGER = LOGGER.getChild("CVEDB")
@@ -174,6 +176,9 @@ async def update_cve_entries(self):
                 self.all_cve_entries.append(data)
 
     def parse_multiple_version(self, range_string):
+        """Parses multiple version strings from a range string.
+        Args:range_string (str): The range string to parse.
+        Returns:list: A list of parsed version strings."""
         version_strings = range_string.split(",")
         start = False
         versions = []