public ExpectedAttributeValue withAttributeValueList(AttributeValue... attributeValueList) {
        if (this.attributeValueList == null) {
            setAttributeValueList(new java.util.ArrayList<AttributeValue>(attributeValueList.length));
        }
        for (AttributeValue ele : attributeValueList) {
            this.attributeValueList.add(ele);
        }
        return this;
    }
<p>
One or more values to evaluate against the supplied attribute. The number of values in the list depends on the
<code>ComparisonOperator</code> being used.
</p>
<p>
For type Number, value comparisons are numeric.
</p>
<p>
String value comparisons for greater than, equals, or less than are based on ASCII character code values. For
example, <code>a</code> is greater than <code>A</code>, and <code>a</code> is greater than <code>B</code>. For a
list of code values, see <a
href="http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters">http://en.wikipedia
.org/wiki/ASCII#ASCII_printable_characters</a>.
</p>
<p>
For Binary, DynamoDB treats each byte of the binary data as unsigned when it compares binary values.
</p>
<p>
For information on specifying data types in JSON, see <a
href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DataFormat.html">JSON Data Format</a> in
the <i>Amazon DynamoDB Developer Guide</i>.
</p>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setAttributeValueList(java.util.Collection)} or {@link #withAttributeValueList(java.util.Collection)} if
you want to override the existing values.
</p>

@param attributeValueList
       One or more values to evaluate against the supplied attribute. The number of values in the list depends on
       the <code>ComparisonOperator</code> being used.</p>
       <p>
       For type Number, value comparisons are numeric.
       </p>
       <p>
       String value comparisons for greater than, equals, or less than are based on ASCII character code values.
       For example, <code>a</code> is greater than <code>A</code>, and <code>a</code> is greater than
       <code>B</code>. For a list of code values, see <a
       href="http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters"
       >http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters</a>.
       </p>
       <p>
       For Binary, DynamoDB treats each byte of the binary data as unsigned when it compares binary values.
       </p>
       <p>
       For information on specifying data types in JSON, see <a
       href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DataFormat.html">JSON Data
       Format</a> in the <i>Amazon DynamoDB Developer Guide</i>.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-dynamodb/src/main/java/com/amazonaws/services/dynamodbv2/model/ExpectedAttributeValue.java