import jetbrains.mps.smodel.structure.Extension;
import org.jetbrains.mps.openapi.language.SAbstractConcept;
import org.jetbrains.mps.openapi.language.SProperty;
import org.jetbrains.mps.openapi.language.SContainmentLink;
import org.jetbrains.mps.openapi.language.SReferenceLink;
<BUG>import jetbrains.mps.lang.migration.runtime.base.RefactoringSession;
import java.util.Map;</BUG>
import org.jetbrains.mps.openapi.module.SModuleReference;
import jetbrains.mps.internal.collections.runtime.MapSequence;
import java.util.HashMap;

import jetbrains.mps.smodel.structure.Extension;
import org.jetbrains.mps.openapi.language.SAbstractConcept;
import org.jetbrains.mps.openapi.language.SProperty;
import org.jetbrains.mps.openapi.language.SContainmentLink;
import org.jetbrains.mps.openapi.language.SReferenceLink;
import jetbrains.mps.lang.migration.runtime.base.RefactoringSession;
import jetbrains.mps.smodel.Language;
import java.util.Map;
import org.jetbrains.mps.openapi.module.SModuleReference;
import jetbrains.mps.internal.collections.runtime.MapSequence;
import java.util.HashMap;
