feat(core/tools): support @overloads in generated mocks

[no changelog]

core/tools/build_mocks

@@ -17,6 +17,7 @@ current_indent = 0
 current_class = None
 current_method = None
 current_package = None
+current_method_is_overload = False
 
 
 def split_to_parts(line, mod_desc=None):
@@ -24,6 +25,7 @@ def split_to_parts(line, mod_desc=None):
     global current_class
     global current_method
     global current_package
+    global current_method_is_overload
 
     if line.startswith("package: "):
         current_package = line[9:].strip()
@@ -34,6 +36,10 @@ def split_to_parts(line, mod_desc=None):
         current_class = None
         return
 
+    if line == "@overload\n":
+        current_method_is_overload = True
+        return
+
     if line.startswith("class "):
         current_class = line[6:].split("(")[0].strip(":")
         current_indent = 0
@@ -51,6 +57,10 @@ def split_to_parts(line, mod_desc=None):
             yield (current_package, "\n")
             current_indent = 4
 
+        if current_method_is_overload:
+            yield (current_package, current_indent * " " + "@overload\n")
+            current_method_is_overload = False
+
     line = current_indent * " " + line
 
     yield (current_package, line)