public boolean isDirectInvocationOnly() {
        return directInvocationOnly;
    }

    /**
     * @param directInvocationOnly <code>true</code> if the Mojo cannot be invoked directly,
     * <code>false</code> otherwise.
     */
    public void setDirectInvocationOnly(boolean directInvocationOnly) {
        this.directInvocationOnly = directInvocationOnly;
    }

    /**

            mojo.setDependencyCollectionRequired(dependencyCollection.getValue());
        }

        String directInvocationOnly = c.getChild("requiresDirectInvocation").getValue();

        if (directInvocationOnly != null) {
            mojo.setDirectInvocationOnly(Boolean.parseBoolean(directInvocationOnly));
        }

        String requiresProject = c.getChild("requiresProject").getValue();

          <type>boolean</type>
          <description>Flags this Mojo to be invoked directly only.</description>
          <defaultValue>false</defaultValue>
        </field>
        <field>
          <name>directInvocationOnly</name>
          <version>2.0.0+</version>
          <type>boolean</type>
          <description>Flags this Mojo to be invoked directly only.</description>
          <defaultValue>false</defaultValue>