Move the get_requirements over to the IntermedSymbols which actually requires the parameter.

volatility/framework/symbols/intermed.py

@@ -12,6 +12,7 @@ from abc import ABCMeta
 import volatility
 from volatility import schemas, symbols
 from volatility.framework import class_subclasses, constants, exceptions, interfaces, objects, layers
+from volatility.framework.configuration import requirements
 from volatility.framework.symbols import native, metadata
 
 vollog = logging.getLogger(__name__)
@@ -204,6 +205,11 @@ class IntermediateSymbolTable(interfaces.symbols.SymbolTableInterface):
         context.symbol_space.append(table)
         return table_name
 
+    @classmethod
+    def get_requirements(cls) -> typing.List[interfaces.configuration.RequirementInterface]:
+        return [requirements.StringRequirement("isf_url",
+                                               description = "JSON file containing the symbols encoded in the Intermediate Symbol Format")]
+
 
 class ISFormatTable(interfaces.symbols.SymbolTableInterface, metaclass = ABCMeta):
     """Provide a base class to identify all subclasses"""

volatility/framework/symbols/linux/__init__.py

@@ -32,8 +32,3 @@ class LinuxKernelIntermedSymbols(intermed.IntermediateSymbolTable):
 
         if 'mount' in self.types:
             self.set_type_class('mount', extensions.mount)
-
-    @classmethod
-    def get_requirements(cls) -> typing.List[interfaces.configuration.RequirementInterface]:
-        return [requirements.StringRequirement("isf_url",
-                                               description = "JSON file containing the symbols encoded in the Intermediate Symbol Format")]

volatility/framework/symbols/windows/__init__.py

@@ -57,8 +57,3 @@ class WindowsKernelIntermedSymbols(intermed.IntermediateSymbolTable):
             self.set_type_class('_RTL_BALANCED_NODE', extensions._MMVAD_SHORT)
         except ValueError:
             pass
-
-    @classmethod
-    def get_requirements(cls) -> typing.List[interfaces.configuration.RequirementInterface]:
-        return [requirements.StringRequirement("isf_url",
-                                               description = "JSON file containing the symbols encoded in the Intermediate Symbol Format")]