Add find_dependents_by_ptcpnt_id to local bgs

* Create PersonWebService class
* Add `FindDependentsByPtcpntId` to BGSClient Definitions for WSDL
  caching
* Add test and cassette

modules/claims_api/app/clients/claims_api/bgs_client/definitions.rb

@@ -201,6 +201,15 @@ module PersonWebService
             path: 'PersonWebService'
           )
 
+        module FindDependentsByPtcpntId
+          DEFINITION =
+            Action.new(
+              service: PersonWebService::DEFINITION,
+              name: 'findDependentsByPtcpntId',
+              key: 'DependentDTO'
+            )
+        end
+
         module FindPersonBySSN
           DEFINITION =
             Action.new(

modules/claims_api/lib/bgs_service/person_web_service.rb

@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+module ClaimsApi
+  class PersonWebService < ClaimsApi::LocalBGS
+    def bean_name
+      'PersonWebServiceBean/PersonWebService'
+    end
+
+    def find_dependents_by_ptcpnt_id(id)
+      body = Nokogiri::XML::DocumentFragment.parse <<~EOXML
+        <ptcpntId />
+      EOXML
+
+      { ptcpntId: id }.each do |k, v|
+        body.xpath("./*[local-name()='#{k}']").first.content = v
+      end
+
+      make_request(endpoint: bean_name, action: 'findDependentsByPtcpntId', body:, key: 'DependentDTO')
+    end
+  end
+end

modules/claims_api/spec/lib/claims_api/person_web_service_spec.rb

@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+require 'bgs_service/person_web_service'
+
+describe ClaimsApi::PersonWebService do
+  subject { described_class.new external_uid: 'xUid', external_key: 'xKey' }
+
+  describe '#find_dependents_by_ptcpnt_id' do
+    it 'responds as expected' do
+      VCR.use_cassette('claims_api/bgs/person_web_service/find_dependents_by_ptcpnt_id') do
+        # rubocop:disable Style/NumericLiterals
+        result = subject.find_dependents_by_ptcpnt_id(600052699)
+        # rubocop:enable Style/NumericLiterals
+        expect(result).to be_a Hash
+        expect(result[:dependent][:first_nm]).to eq 'MARGIE'
+      end
+    end
+  end
+end