public SafeHtmlBuilder setPoster(SafeUrl value) {
    """
	Sets the {@code poster} attribute for this element.
	
	<p>The attribute {@code poster} with a {@code SafeUrl} value is allowed on these elements:
	
	<ul>
	<li>{@code video}
	</ul>
	
	@throws IllegalArgumentException if the {@code poster} attribute with a {@code SafeUrl} value
	is not allowed on this element
    """
    if (!POSTER_SAFE_URL_ELEMENT_WHITELIST.contains(elementName)) {
      throw new IllegalArgumentException(
          "Attribute \"poster\" with a SafeUrl value can only be used "
              + "by one of the following elements: "
              + POSTER_SAFE_URL_ELEMENT_WHITELIST);
    }
    return setAttribute("poster", value.getSafeUrlString());
  }
public SafeHtmlBuilder setPoster(SafeUrl value) {
    if (!POSTER_SAFE_URL_ELEMENT_WHITELIST.contains(elementName)) {
      throw new IllegalArgumentException(
          "Attribute \"poster\" with a SafeUrl value can only be used "
              + "by one of the following elements: "
              + POSTER_SAFE_URL_ELEMENT_WHITELIST);
    }
    return setAttribute("poster", value.getSafeUrlString());
  }
public SafeHtmlBuilder setPoster ( SafeUrl value ) { if ( ! POSTER_SAFE_URL_ELEMENT_WHITELIST . contains ( elementName ) ) { throw new IllegalArgumentException ( "Attribute \"poster\" with a SafeUrl value can only be used " + "by one of the following elements: " + POSTER_SAFE_URL_ELEMENT_WHITELIST ) ; } return setAttribute ( "poster" , value . getSafeUrlString ( ) ) ; }
Sets the {@code poster} attribute for this element.

<p>The attribute {@code poster} with a {@code SafeUrl} value is allowed on these elements:

<ul>
<li>{@code video}
</ul>

@throws IllegalArgumentException if the {@code poster} attribute with a {@code SafeUrl} value
is not allowed on this element
Sets the { @code poster } attribute for this element .