Add get prepayment as PDF for accounting

Author: SidneyAllen

accounting-yaml/xero_accounting.yaml

@@ -9960,6 +9960,35 @@ contact: {}, date:"2020-01-01", user:{} } ] } ] }'
                             }
                           ]
                         }'
+  '/Prepayments/{PrepaymentID}/pdf':
+    parameters:
+      - $ref: '#/components/parameters/requiredHeader'
+    x-related-model: Prepayment
+    get:
+      security:
+        - OAuth2: [accounting.transactions.read]
+      tags:
+        - Accounting
+      operationId: getPrepaymentAsPdf
+      x-path: '/Prepayments/{PrepaymentID}'
+      summary: Allows you to retrieve prepayments as PDF files
+      parameters:
+        - required: true
+          in: path
+          name: PrepaymentID
+          description: Unique identifier for a PrePayment
+          example: "00000000-0000-0000-000-000000000000"
+          schema:
+            type: string
+            format: uuid
+      responses:
+        '200':
+          description: Success - return response of byte array pdf version of specified Prepayments
+          content:
+             application/pdf:
+              schema:
+                type: string
+                format: binary
   '/Prepayments/{PrepaymentID}':
     parameters:
       - $ref: '#/components/parameters/requiredHeader'