Disable MethodName for Function

This is triggered because method names shouldn't start with an
UpperCase, but this instance is okay as it emulates a class

Author: isuruf

.rubocop_todo.yml

@@ -30,10 +30,3 @@ Style/Documentation:
     - 'lib/symengine/iruby.rb'
     - 'lib/symengine/undef_function.rb'
 
-# Offense count: 1
-# Configuration parameters: EnforcedStyle, SupportedStyles.
-# SupportedStyles: snake_case, camelCase
-Style/MethodName:
-  Exclude:
-    - 'lib/symengine.rb'
-

lib/symengine.rb

@@ -30,7 +30,7 @@ def symbols(ary_or_string, *params)
       end
     end
 
-    def Function(n)
+    def Function(n) # rubocop:disable Style/MethodName
       SymEngine::UndefFunction.new(n)
     end