Rename Evaluate() to Get() and add GetDefault()

Part of the design of property structs is that they were easy to access.
In keeping with that spirit, use a shorter and easier to spell name
for the getter, and add GetDefault() so that you don't need to pass
the result of Get() to one of the
proptools.StringDefault/BoolDefault/etc functions.

Bug: 323382414
Test: m nothing --no-skip-soong-tests
Change-Id: I0b8df151de59f2cd9463425c6666cbfda6bf47f2
diff --git a/android/path_properties.go b/android/path_properties.go
index ea92565..6210aee 100644
--- a/android/path_properties.go
+++ b/android/path_properties.go
@@ -109,9 +109,9 @@
 			case reflect.Struct:
 				intf := sv.Interface()
 				if configurable, ok := intf.(proptools.Configurable[string]); ok {
-					ret = append(ret, proptools.String(configurable.Evaluate(ctx)))
+					ret = append(ret, configurable.GetOrDefault(ctx, ""))
 				} else if configurable, ok := intf.(proptools.Configurable[[]string]); ok {
-					ret = append(ret, proptools.Slice(configurable.Evaluate(ctx))...)
+					ret = append(ret, configurable.GetOrDefault(ctx, nil)...)
 				} else {
 					panic(fmt.Errorf(`field %s in type %s has tag android:"path" but is not a string or slice of strings, it is a %s`,
 						v.Type().FieldByIndex(i).Name, v.Type(), sv.Type()))
diff --git a/android/selects_test.go b/android/selects_test.go
index ec0847f..e59b3e6 100644
--- a/android/selects_test.go
+++ b/android/selects_test.go
@@ -489,11 +489,11 @@
 
 func (p *selectsMockModule) GenerateAndroidBuildActions(ctx ModuleContext) {
 	SetProvider(ctx, selectsTestProviderKey, selectsTestProvider{
-		my_bool:               p.properties.My_bool.Evaluate(ctx),
-		my_string:             p.properties.My_string.Evaluate(ctx),
-		my_string_list:        p.properties.My_string_list.Evaluate(ctx),
-		my_paths:              p.properties.My_paths.Evaluate(ctx),
-		replacing_string_list: p.properties.Replacing_string_list.Evaluate(ctx),
+		my_bool:               p.properties.My_bool.Get(ctx),
+		my_string:             p.properties.My_string.Get(ctx),
+		my_string_list:        p.properties.My_string_list.Get(ctx),
+		my_paths:              p.properties.My_paths.Get(ctx),
+		replacing_string_list: p.properties.Replacing_string_list.Get(ctx),
 	})
 }