diff --git a/src/SchemaBuilder/SchemaBuilder.php b/src/SchemaBuilder/SchemaBuilder.php
index 2c0a9b1..70af5ea 100644
--- a/src/SchemaBuilder/SchemaBuilder.php
+++ b/src/SchemaBuilder/SchemaBuilder.php
@@ -9,7 +9,13 @@ use ReflectionClass;
 
 class SchemaBuilder
 {
-    private static function GetValidKeys()
+    /**
+     * Goes through the Attribute classes and makes a list of all the Properties they have.
+     * This is so if a user adds another variable to the Attribute constructor, it won't appear in the final Schema.
+     * 
+     * @return array[]
+     */
+    private static function GetValidKeys(): array
     {
         $validDocumentAttributeNames = [];
         $validPropertyAttributeNames = [];
@@ -21,6 +27,15 @@ class SchemaBuilder
 
         return [$validDocumentAttributeNames, $validPropertyAttributeNames];
     }
+
+    /**
+     * Checks to see if a value is "okay" for a Schema.
+     *
+     * @param string $key
+     * @param mixed $value
+     * @param array $valids
+     * @return bool
+     */
     private static function VerifyField(string $key, mixed $value, array $valids): bool
     {
         if(!in_array(needle: $key, haystack: $valids))
@@ -30,6 +45,13 @@ class SchemaBuilder
 
         return true;
     }
+
+    /**
+     * Just converts PascalCase to snake_case.
+     *
+     * @param string $input
+     * @return string
+     */
     private static function PascalCaseToSnakeCase(string $input): string
     {
         return strtolower(preg_replace('/(?<!^)[A-Z]/', '_$0', $input));