public void setCharacters(Characters characters) {
        this.characters = characters;
    }
<p>
The number of characters in the input request documentation.
</p>

@param characters
       The number of characters in the input request documentation.
aws-java-sdk-comprehendmedical/src/main/java/com/amazonaws/services/comprehendmedical/model/InferSNOMEDCTResult.java