ghost modifier in Java are back

Author: wadoon

key.core/build.gradle

@@ -22,7 +22,7 @@ dependencies {
 
     api project(':key.util')
 
-    def JP_VERSION = "3.28.0-K12.5"
+    def JP_VERSION = "3.28.0-K12.7"
     api "org.key-project.proofjava:javaparser-core:$JP_VERSION"
     api "org.key-project.proofjava:javaparser-core-serialization:$JP_VERSION"
     api "org.key-project.proofjava:javaparser-symbol-solver-core:$JP_VERSION"

key.core/src/main/resources/de/uka/ilkd/key/proof/rules/javaRules.key

@@ -412,15 +412,13 @@
         \displayname "variableDeclaration"
     };
 
-    /*
     variableDeclarationGhost {
         \find(\modality{#allmodal}{.. ghost #t #v0; ...}\endmodality (post))
         \replacewith(\modality{#allmodal}{..  ...}\endmodality (post))
         \addprogvars(#v0)
         \heuristics(simplify_prog, simplify_prog_subset)
         \displayname "ghostDeclaration"
     };
-    */
 
     variableDeclarationAssign {
         \find(\modality{#allmodal}{.. #t #v0 = #vi; ...}\endmodality (post))
@@ -436,13 +434,12 @@
         \displayname "variableDeclaration"
     };
 
-	/*
     variableDeclarationGhostAssign {
         \find(\modality{#allmodal}{.. ghost #t #v0 = #vi; ...}\endmodality (post))
         \replacewith(\modality{#allmodal}{.. ghost #t #v0; #v0 = #vi; ...}\endmodality (post))
         \heuristics(simplify_prog, simplify_prog_subset)
         \displayname "ghostDeclaration"
-    };*/
+    };
 
     variableDeclarationMult {
         \find(\modality{#allmodal}{.. #multvardecl ...}\endmodality (post))