in lib/cc/config/validation/hash_validations.rb [12:23]
def validate_key_type(key, types)
if types.is_a?(Class)
return validate_key_type(key, [types])
elsif data.key?(key)
unless types.include?(data[key].class)
errors << key_type_error_message(key, types)
return false
end
end
true
end