@Override
    public int hashCode() {
        int hash = 7;
        hash = 59 * hash + (this.type != null ? this.type.hashCode() : 0);
        hash = 59 * hash + (this.name != null ? this.name.hashCode() : 0);
        hash = 59 * hash + (this.value != null ? this.value.hashCode() : 0);
        return hash;
    }
Returns the material parameter value as it would appear in a J3M
file. E.g.
<pre>
MaterialParameters {
    ABC : 1 2 3 4
}
</pre>
Assuming "ABC" is a Vector4 parameter, then the value
"1 2 3 4" would be returned by this method.

@return material parameter value as it would appear in a J3M file.
jme3-core/src/main/java/com/jme3/material/MatParam.java