import com.intellij.lang.LanguageNamesValidation;
import com.intellij.lang.refactoring.NamesValidator;
import com.intellij.openapi.fileTypes.FileType;
import com.intellij.openapi.fileTypes.LanguageFileType;
import com.intellij.openapi.project.Project;
<BUG>import com.intellij.psi.PsiFile;
import com.intellij.psi.search.GlobalSearchScope;
import com.intellij.psi.search.PsiSearchHelper;

import com.intellij.util.Processor;</BUG>
import gnu.trove.THashMap;

import com.intellij.lang.LanguageNamesValidation;
import com.intellij.lang.refactoring.NamesValidator;
import com.intellij.openapi.fileTypes.FileType;
import com.intellij.openapi.fileTypes.LanguageFileType;
import com.intellij.openapi.project.Project;
import com.intellij.psi.PsiFile;
import com.intellij.psi.impl.cache.CacheManager;
import com.intellij.psi.search.GlobalSearchScope;
import com.intellij.psi.search.UsageSearchContext;
import com.intellij.structuralsearch.MatchOptions;
import com.intellij.util.Processor;
import gnu.trove.THashMap;
