} // -- String getModelId()

    /**
     * Set the path/URL of the POM or {@code null} if unknown.
     *
     * @param location
     */
    public void setLocation(String location) {
        this.location = location;
    } // -- void setLocation( String )

    /**
     * Set the identifier of the POM in the format {@code
     * <groupId>:<artifactId>:<version>}.
     *
     * @param modelId
     */

            problems.add(new ModelProblemCollectorRequest(Severity.ERROR, Version.BASE)
                    .setMessage("The property name is required to activate the profile " + profile.getId())
                    .setLocation(property.getLocation("")));
            return false;
        }

        String sysValue = context.getUserProperties().get(name);
        if (sysValue == null) {
            sysValue = context.getSystemProperties().get(name);

                        .setMessage(
                                "Failed to determine activation for profile " + profile.getId() + ": " + e.getMessage())
                        .setLocation(profile.getLocation(""))
                        .setException(e));
                return false;
            }
        }
        return isActive;
    }

    private boolean isActiveByDefault(Profile profile) {

            }
        }
        result.setLocations(locations);

        return result;
    } // -- InputLocation merge( InputLocation, InputLocation, java.util.Collection )

    /**
     *
     *
     * @param locations
     */
    public void setLocations(java.util.Map<Object, InputLocation> locations) {
        this.locations = locations;
    } // -- void setLocations( java.util.Map )

    /**

                    .setMessage("Failed to interpolate file location " + path + " for profile " + profile.getId() + ": "
                            + e.getMessage())
                    .setLocation(file.getLocation(missing ? "missing" : "exists"))
                    .setException(e));
            return false;
        }

        if (path == null) {
            return false;
        }

            merged.putAll(target.getProperties());
        }
        target.setProperties(merged);
        target.setLocation(
                "properties",
                InputLocation.merge(
                        target.getLocation("properties"), source.getLocation("properties"), sourceDominant));
    }

    protected void mergeDistributionManagement(
            DistributionManagement target,

            if (sourceDominant) {
                target.setUrl(src);
                target.setLocation("url", source.getLocation("url"));
            } else if (target.getUrl() == null) {
                target.setUrl(extrapolateChildUrl(src, source.isChildProjectUrlInheritAppendPath(), context));
                target.setLocation("url", source.getLocation("url"));
            }
        }
    }

    /*

                plugin.setArtifactId(gs.artifactId);
                plugin.setVersion(gs.version);

                plugin.setLocation("", location);
                plugin.setLocation("groupId", location);
                plugin.setLocation("artifactId", location);
                plugin.setLocation("version", location);

                Plugin existing = plugins.get(plugin);
                if (existing != null) {

                merged.putAll(target.getProperties());
            }
            target.setProperties(merged);
            target.setLocation(
                    "properties",
                    InputLocation.merge(
                            target.getLocation("properties"), source.getLocation("properties"), sourceDominant));
        }

        private void putAll(Map<Object, Object> s, Map<Object, Object> t, Object excludeKey) {

        }

        LOGGER.debug(
                "Reading installation settings from '{}'",
                getLocation(settingsRequest.getGlobalSettingsSource(), settingsRequest.getGlobalSettingsFile()));
        LOGGER.debug(
                "Reading project settings from '{}'",
                getLocation(settingsRequest.getProjectSettingsSource(), settingsRequest.getProjectSettingsFile()));
        LOGGER.debug(