public void setReplaceChars(String replaceChars) {
        this.replaceChars = replaceChars;
    }
<p>
A value that specifies to replaces the invalid characters specified in <code>ReplaceInvalidChars</code>,
substituting the specified characters instead. The default is <code>"?"</code>.
</p>

@param replaceChars
       A value that specifies to replaces the invalid characters specified in <code>ReplaceInvalidChars</code>,
       substituting the specified characters instead. The default is <code>"?"</code>.
aws-java-sdk-dms/src/main/java/com/amazonaws/services/databasemigrationservice/model/RedshiftSettings.java