public void setExtension(final int pRow, final String pExtension) {
setValue(pRow, "extension", pExtension);
}
public final PsiDependencyProperties getProperties(final int pRow) {
PsiDependencyProperties props = propsCache.get(pRow);
if (props == null) {
props = new DefaultPsiDependencyProperties(this, pRow);
propsCache.put(pRow, props);
}