public void setHomeDirectoryMappings(java.util.Collection<HomeDirectoryMapEntry> homeDirectoryMappings) {
        if (homeDirectoryMappings == null) {
            this.homeDirectoryMappings = null;
            return;
        }

        this.homeDirectoryMappings = new java.util.ArrayList<HomeDirectoryMapEntry>(homeDirectoryMappings);
    }
<p>
Logical directory mappings that specify what Amazon S3 or Amazon EFS paths and keys should be visible to your
user and how you want to make them visible. You must specify the <code>Entry</code> and <code>Target</code> pair,
where <code>Entry</code> shows how the path is made visible and <code>Target</code> is the actual Amazon S3 or
Amazon EFS path. If you only specify a target, it is displayed as is. You also must ensure that your Identity and
Access Management (IAM) role provides access to paths in <code>Target</code>. This value can be set only when
<code>HomeDirectoryType</code> is set to <i>LOGICAL</i>.
</p>
<p>
In most cases, you can use this value instead of the session policy to lock down the associated access to the
designated home directory ("<code>chroot</code>"). To do this, you can set <code>Entry</code> to '/' and set
<code>Target</code> to the <code>HomeDirectory</code> parameter value.
</p>

@param homeDirectoryMappings
       Logical directory mappings that specify what Amazon S3 or Amazon EFS paths and keys should be visible to
       your user and how you want to make them visible. You must specify the <code>Entry</code> and
       <code>Target</code> pair, where <code>Entry</code> shows how the path is made visible and
       <code>Target</code> is the actual Amazon S3 or Amazon EFS path. If you only specify a target, it is
       displayed as is. You also must ensure that your Identity and Access Management (IAM) role provides access
       to paths in <code>Target</code>. This value can be set only when <code>HomeDirectoryType</code> is set to
       <i>LOGICAL</i>.</p>
       <p>
       In most cases, you can use this value instead of the session policy to lock down the associated access to
       the designated home directory ("<code>chroot</code>"). To do this, you can set <code>Entry</code> to '/'
       and set <code>Target</code> to the <code>HomeDirectory</code> parameter value.
aws-java-sdk-transfer/src/main/java/com/amazonaws/services/transfer/model/DescribedAccess.java