visit_when

# File tools/rail_inspector/lib/rail_inspector/visitor/framework_default.rb, line 38
        def visit_when(node)
          version = node.arguments.parts[0].parts[0].value

          config_map[version] = VersionedConfig.new.config_for(node.statements)

          visit_when(node.consequent) if node.consequent.is_a? SyntaxTree::When
        end