Equals and hashCode in DataDependencyArc

import tfm.arcs.Arc;

import java.util.Map;

import java.util.Objects;

/**

 * An arc used in the {@link tfm.graphs.PDG} and {@link tfm.graphs.SDG},

        map.put("color", DefaultAttribute.createAttribute("red"));

        return map;

    }

    @Override

    public boolean equals(Object o) {

        if (this == o) {

            return true;

        }

        if (!(o instanceof DataDependencyArc)) {

            return false;

        }

        DataDependencyArc other = (DataDependencyArc) o;

        return Objects.equals(variable, other.variable)

                && Objects.equals(getSource(), other.getSource())

                && Objects.equals(getTarget(), other.getTarget());

    }

    @Override

    public int hashCode() {

        return Objects.hash(variable, getSource(), getTarget());

    }

}