Returns {@code true} if this queue contains the specified element.
More formally, returns {@code true} if and only if this queue contains
at least one element {@code e} such that {@code o.equals(e)}.
@param o object to be checked for containment in this queue
@return {@code true} if this queue contains the specified element
@throws ClassCastException if the class of the specified element
is incompatible with this queue
(<a href="{@docRoot}/java.base/java/util/Collection.html#optional-restrictions">optional</a>)
@throws NullPointerException if the specified element is null
(<a href="{@docRoot}/java.base/java/util/Collection.html#optional-restrictions">optional</a>)
Returns {@code true} if this queue contains the specified element. More formally, returns {@code true} if and only if this queue contains at least one element {@code e} such that {@code o.equals(e)}.
@param o object to be checked for containment in this queue @return {@code true} if this queue contains the specified element @throws ClassCastException if the class of the specified element is incompatible with this queue (<a href="{@docRoot}/java.base/java/util/Collection.html#optional-restrictions">optional</a>) @throws NullPointerException if the specified element is null (<a href="{@docRoot}/java.base/java/util/Collection.html#optional-restrictions">optional</a>)