code: function getSuperCallAtGivenIndex(ctor, index) {
                  if (!ctor.body) {
                      return undefined;
                  }
                  var statements = ctor.body.statements;
                  if (!statements || index >= statements.length) {
                      return undefined;
                  }
                  var statement = statements[index];
                  if (statement.kind === 202 /* ExpressionStatement */) {
                      return ts.isSuperCallExpression(statement.expression) ? statement : undefined;
                  }
              }
docs: Return the statement at a given index if it is a super-call statement
  @param ctor a constructor declaration
  @param index an index to constructor's body to check