public Mapping withFromType(String fromType) {
        setFromType(fromType);
        return this;
    }
<p>
The type of the data to be modified.
</p>

@param fromType
       The type of the data to be modified.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-glue/src/main/java/com/amazonaws/services/glue/model/Mapping.java