public synchronized void setSourcePermissions(Map<String, Node> sourceMap) {
        for (PermissionProcessor processor : this.processors) {
            processor.setSource(sourceMap);
            processor.refresh();
        }
    }
Defines the source permissions map which should be used when calculating
a result.

@param sourceMap the source map
common/src/main/java/me/lucko/luckperms/common/calculator/PermissionCalculator.java