How to force Savon to use a specific parameter case - ruby

Question

I"m trying to connect to a SOAP API using Savon.
The WSDL shows this:
wsdl:operation name="CustomerList" parameterOrder="Username Password Settings">
<wsdl:input message="impl:CustomerListRequest" name="CustomerListRequest"/>
<wsdl:output message="impl:CustomerListResponse" name="CustomerListResponse"/>
</wsdl:operation>
Customer Support says to use a request such as this:
<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope" xmlns:ei2="http://ei2.nobj.nable.com/">
<soap:Header/>
<soap:Body>
<ei2:customerList>
<!--Optional:-->
<ei2:username>testaccount#n-able.com</ei2:username>
<!--Optional:-->
<ei2:password>!PDf2lfij23l!!</ei2:password>
<!--Zero or more repetitions:-->
<ei2:settings>
<!--Optional:-->
<ei2:key>null</ei2:key>
<!--Optional:-->
<ei2:value>null</ei2:value>
</ei2:settings>
</ei2:customerList>
</soap:Body>
</soap:Envelope>
This is my request:
{"SOAPAction"=>"\"CustomerList\"", "Content-Type"=>"text/xml;charset=UTF-8", "Content-Length"=>"452"}
<?xml version="1.0" encoding="UTF-8"?><env:Envelope xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:impl="http://www.n-able.com/mickey" xmlns:env="http://schemas.xmlsoap.org/soap/envelope/">
<env:Body>
<impl:CustomerList>
<username>test#test.com</username>
<password>MytestPassword1234</password>
<settings>
<listSOs>false</listSOs>
</settings>
</impl:CustomerList>
</env:Body>
</env:Envelope>
The difference is that the WSDL which Savon consumes and generates methods to call off of, is making my request send CustomerList instead of the customerList the API seems to be expecting.
Is there a way to force Savon to send CustomerList instead of customerList without constructing the entire SOAP Request by hand?
Edit 1
Found the answer in this Github Issue. https://github.com/savonrb/savon/issues/530
By adding the following to a gemspec, I was able to get a well formed request:
spec.add_runtime_dependency 'savon', '~> 2.3'
spec.add_runtime_dependency 'wasabi', '~> 3.2'

Answer 1

include one of those when you build your client:
convert_request_keys_to :camelcase # or one of [:lower_camelcase, :upcase, :none]
or work without the WSDL and hand code the call with 'strings'.