linux: module extension object: add docstring to get_symbol_type()

Author: gcmoreira

volatility3/framework/symbols/linux/extensions/__init__.py

@@ -361,7 +361,18 @@ def section_typetab(self):
 
         raise AttributeError("Unable to get typetab section, it needs a kernel >= 5.2")
 
-    def get_symbol_type(self, symbol, symbol_index):
+    def get_symbol_type(
+        self, symbol: interfaces.objects.ObjectInterface, symbol_index: int
+    ) -> str:
+        """Determines the type of a given ELF symbol.
+
+        Args:
+            symbol: The ELF symbol object (elf_sym)
+            symbol_index: The index of the symbol within the type table
+
+        Returns:
+            A single-character string representing the symbol type
+        """
         if self.has_member("kallsyms") and self.kallsyms.has_member("typetab"):
             # kernels >= 5.2 1c7651f43777cdd59c1aaa82c87324d3e7438c7b types have its own array
             layer = self._context.layers[self.vol.layer_name]