code: public com.google.api.ads.adwords.axis.v201809.o.KeywordEstimateRequest[] getKeywordEstimateRequests() {
          return keywordEstimateRequests;
      }
docs: Gets the keywordEstimateRequests value for this AdGroupEstimateRequest.
  
  @return keywordEstimateRequests   * The keywords to estimate.
  <span class="constraint ContentsDistinct">This
  field must contain distinct elements.</span>
  <span class="constraint ContentsNotNull">This
  field must not contain {@code null} elements.</span>
  <span class="constraint Required">This field is
  required and should not be {@code null}.</span>