public BulkEmailEntry withReplacementHeaders(MessageHeader... replacementHeaders) {
        if (this.replacementHeaders == null) {
            setReplacementHeaders(new java.util.ArrayList<MessageHeader>(replacementHeaders.length));
        }
        for (MessageHeader ele : replacementHeaders) {
            this.replacementHeaders.add(ele);
        }
        return this;
    }
<p>
The list of message headers associated with the <code>BulkEmailEntry</code> data type.
</p>
<ul>
<li>
<p>
Headers Not Present in <code>BulkEmailEntry</code>: If a header is specified in <a
href="https://docs.aws.amazon.com/ses/latest/APIReference-V2/API_Template.html"> <code>Template</code> </a> but
not in <code>BulkEmailEntry</code>, the header from <code>Template</code> will be added to the outgoing email.
</p>
</li>
<li>
<p>
Headers Present in <code>BulkEmailEntry</code>: If a header is specified in <code>BulkEmailEntry</code>, it takes
precedence over any header of the same name specified in <a
href="https://docs.aws.amazon.com/ses/latest/APIReference-V2/API_Template.html"> <code>Template</code> </a>:
</p>
<ul>
<li>
<p>
If the header is also defined within <code>Template</code>, the value from <code>BulkEmailEntry</code> will
replace the header's value in the email.
</p>
</li>
<li>
<p>
If the header is not defined within <code>Template</code>, it will simply be added to the email as specified in
<code>BulkEmailEntry</code>.
</p>
</li>
</ul>
</li>
</ul>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setReplacementHeaders(java.util.Collection)} or {@link #withReplacementHeaders(java.util.Collection)} if
you want to override the existing values.
</p>

@param replacementHeaders
       The list of message headers associated with the <code>BulkEmailEntry</code> data type.</p>
       <ul>
       <li>
       <p>
       Headers Not Present in <code>BulkEmailEntry</code>: If a header is specified in <a
       href="https://docs.aws.amazon.com/ses/latest/APIReference-V2/API_Template.html"> <code>Template</code>
       </a> but not in <code>BulkEmailEntry</code>, the header from <code>Template</code> will be added to the
       outgoing email.
       </p>
       </li>
       <li>
       <p>
       Headers Present in <code>BulkEmailEntry</code>: If a header is specified in <code>BulkEmailEntry</code>,
       it takes precedence over any header of the same name specified in <a
       href="https://docs.aws.amazon.com/ses/latest/APIReference-V2/API_Template.html"> <code>Template</code>
       </a>:
       </p>
       <ul>
       <li>
       <p>
       If the header is also defined within <code>Template</code>, the value from <code>BulkEmailEntry</code>
       will replace the header's value in the email.
       </p>
       </li>
       <li>
       <p>
       If the header is not defined within <code>Template</code>, it will simply be added to the email as
       specified in <code>BulkEmailEntry</code>.
       </p>
       </li>
       </ul>
       </li>
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-sesv2/src/main/java/com/amazonaws/services/simpleemailv2/model/BulkEmailEntry.java