Add some docu

src/main/kotlin/helpers/FacetBuildHelpers.kt

@@ -21,6 +21,9 @@ package org.memobase.helpers
 import com.beust.klaxon.JsonObject
 import org.memobase.KEYS
 
+/**
+ * Helper functions to build hierarchical facet values for places and persons.
+ */
 object FacetBuildHelpers {
 
     private const val separator = "~"
@@ -29,6 +32,11 @@ object FacetBuildHelpers {
     private const val level2 = "1"
     private val isAlphaChar = Regex("[A-Za-z]")
 
+    /**
+     * Create the filter and facet value for a person.
+     *
+     * @return Pair of Filter? and Facets
+     */
     fun person(jsonObject: JsonObject): Pair<String?, List<String>> {
         val name = when {
             jsonObject.containsKey(KEYS.lastName) -> {

src/main/kotlin/helpers/Meta.kt

@@ -7,6 +7,9 @@ import org.memobase.model.FacettedContainer
 import org.memobase.model.LanguageContainer
 import org.memobase.rdf.NS
 
+/**
+    Extraction helpers for institutions and record sets.
+ */
 object Meta {
     private val log = LogManager.getLogger("InstitutionExtraction")