update

package.json

@@ -12,8 +12,8 @@
   "license": "",
   "dependencies": {
     "@abaplint/cli": "^2.119.12",
-    "@abaplint/runtime": "^2.13.19",
+    "@abaplint/runtime": "^2.13.20",
     "@abaplint/database-sqlite": "^2.11.78",
-    "@abaplint/transpiler-cli": "^2.13.19"
+    "@abaplint/transpiler-cli": "^2.13.20"
   }
 }

src/cl_proxy_basis.clas.abap

@@ -0,0 +1,16 @@
+CLASS cl_proxy_basis DEFINITION PUBLIC.
+  PUBLIC SECTION.
+
+    INTERFACES if_proxy_basis.
+
+    ALIASES get_protocol FOR if_proxy_basis~get_protocol.
+
+ENDCLASS.
+
+CLASS cl_proxy_basis IMPLEMENTATION.
+
+  METHOD if_proxy_basis~get_protocol.
+    RETURN. " todo, implement method
+  ENDMETHOD.
+
+ENDCLASS.

src/cl_proxy_client.clas.abap

@@ -1,4 +1,4 @@
-CLASS cl_proxy_client DEFINITION PUBLIC.
+CLASS cl_proxy_client DEFINITION PUBLIC INHERITING FROM cl_proxy_basis.
   PUBLIC SECTION.
     INTERFACES if_proxy_client.
 
@@ -10,13 +10,6 @@ CLASS cl_proxy_client DEFINITION PUBLIC.
       RAISING
         cx_ai_system_fault.
 
-    METHODS get_protocol
-      IMPORTING
-        protocol_name   TYPE string
-      RETURNING
-        VALUE(protocol) TYPE REF TO if_wsprotocol
-      RAISING
-        cx_ai_system_fault.
 ENDCLASS.
 
 CLASS cl_proxy_client IMPLEMENTATION.
@@ -29,8 +22,4 @@ CLASS cl_proxy_client IMPLEMENTATION.
     RETURN.
   ENDMETHOD.
 
-  METHOD get_protocol.
-    RETURN.
-  ENDMETHOD.
-
 ENDCLASS.

src/if_proxy_basis.intf.abap

@@ -0,0 +1,11 @@
+INTERFACE if_proxy_basis PUBLIC.
+
+  METHODS get_protocol
+    IMPORTING
+      protocol_name   TYPE string
+    RETURNING
+      VALUE(protocol) TYPE REF TO if_wsprotocol
+    RAISING
+      cx_ai_system_fault.
+
+ENDINTERFACE.