code: public void setProgrammaticCreativeSource(com.google.api.ads.admanager.axis.v201805.ProgrammaticCreativeSource programmaticCreativeSource) {
          this.programmaticCreativeSource = programmaticCreativeSource;
      }
docs: Sets the programmaticCreativeSource value for this ProposalLineItem.
  
  @param programmaticCreativeSource   * Indicates the {@link ProgrammaticCreativeSource} of the programmatic
  line item.
  <span class="constraint Applicable">This attribute
  is applicable when:<ul><li>using programmatic guaranteed, using sales
  management.</li><li>using programmatic guaranteed, not using sales
  management.</li></ul></span>