code: public DescribeCustomKeyStoresResult withCustomKeyStores(CustomKeyStoresListEntry... customKeyStores) {
          if (this.customKeyStores == null) {
              setCustomKeyStores(new com.amazonaws.internal.SdkInternalList<CustomKeyStoresListEntry>(customKeyStores.length));
          }
          for (CustomKeyStoresListEntry ele : customKeyStores) {
              this.customKeyStores.add(ele);
          }
          return this;
      }
docs: <p>
  Contains metadata about each custom key store.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setCustomKeyStores(java.util.Collection)} or {@link #withCustomKeyStores(java.util.Collection)} if you
  want to override the existing values.
  </p>
  
  @param customKeyStores
  Contains metadata about each custom key store.
  @return Returns a reference to this object so that method calls can be chained together.