Kapt tests: minor, add some cases to properties.kt

To check that boolean "is" prefix is treated correctly, and Unit return
type is not translated to void. `@Deprecated` annotations are added just
so that the `$annotations` methods would also be generated.

plugins/kapt3/kapt3-compiler/testData/converter/properties.txt

@@ -9,6 +9,11 @@ public final class Test {
     private final java.lang.Class<?> constJavaClassValue = null;
     @org.jetbrains.annotations.NotNull()
     private final kotlin.reflect.KClass<?> constClassValue = null;
+    @java.lang.Deprecated()
+    private boolean isBoolean = false;
+    @org.jetbrains.annotations.NotNull()
+    @java.lang.Deprecated()
+    private kotlin.Unit unit;
 
     public Test() {
         super();
@@ -38,4 +43,32 @@ public final class Test {
     public final kotlin.reflect.KClass<?> getConstClassValue() {
         return null;
     }
+
+    @java.lang.Deprecated()
+    public final boolean isBoolean() {
+        return false;
+    }
+
+    @java.lang.Deprecated()
+    public static void isBoolean$annotations() {
+    }
+
+    @java.lang.Deprecated()
+    public final void setBoolean(boolean p0) {
+    }
+
+    @org.jetbrains.annotations.NotNull()
+    @java.lang.Deprecated()
+    public final kotlin.Unit getUnit() {
+        return null;
+    }
+
+    @java.lang.Deprecated()
+    public static void getUnit$annotations() {
+    }
+
+    @java.lang.Deprecated()
+    public final void setUnit(@org.jetbrains.annotations.NotNull()
+    kotlin.Unit p0) {
+    }
 }