code: package de.tu_darmstadt.stg.mubench.cli;
  
  /**
   * Represents a fully-qualified Java type name.
   */
  public class FullyQualifiedName {
      private final String fqn;
  
      public FullyQualifiedName(String fqn) {
          this.fqn = fqn;
      }
  
      public String toSourceFileName() {
          return getTopLevelTypeFullyQualifiedName().replace('.', '/') + ".java";
      }
  
      private String getTopLevelTypeFullyQualifiedName() {
          int endOfOuterTypeName = fqn.indexOf('$');
          if (endOfOuterTypeName > -1) {
              return fqn.substring(0, endOfOuterTypeName);
          } else {
              return fqn;
          }
      }
  
      @Override
      public String toString() {
          return fqn;
      }
  }
  