internal InMethodChangeSignatureDetector(IDocument docBefore, IDocument docAfter, 
     SyntaxNode beforeMethod, SyntaxNode afterMethod)
 {
     this.docBefore = docBefore;
     this.docAfter = docAfter;
     this.beforeMethod = beforeMethod;
     this.afterMethod = afterMethod;
     this.methodDeclarationAnalyzer = AnalyzerFactory.GetMethodDeclarationAnalyzer();
     this.paraAnalzyer = AnalyzerFactory.GetParameterAnalyzer();
 }
 internal InMethodChangeSignatureDetector(SyntaxNode beforeMethod, SyntaxNode afterMethod)
 {
     this.beforeMethod = beforeMethod;
     this.afterMethod = afterMethod;
     this._methodDeclarationAnalyzer = AnalyzerFactory.GetMethodDeclarationAnalyzer();
     this.paraAnalzyer = AnalyzerFactory.GetParameterAnalyzer();
 }