code: public ListIdentityPoolUsageResult withIdentityPoolUsages(IdentityPoolUsage... identityPoolUsages) {
          if (this.identityPoolUsages == null) {
              setIdentityPoolUsages(new com.amazonaws.internal.SdkInternalList<IdentityPoolUsage>(identityPoolUsages.length));
          }
          for (IdentityPoolUsage ele : identityPoolUsages) {
              this.identityPoolUsages.add(ele);
          }
          return this;
      }
docs: Usage information for the identity pools.
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setIdentityPoolUsages(java.util.Collection)} or {@link #withIdentityPoolUsages(java.util.Collection)} if
  you want to override the existing values.
  </p>
  
  @param identityPoolUsages
  Usage information for the identity pools.
  @return Returns a reference to this object so that method calls can be chained together.