Added Sources

src/Source.php

@@ -0,0 +1,27 @@
+<?php
+namespace ProVM\Money;
+
+use Carbon\CarbonInterval;
+use ProVM\Common\Alias\Model;
+
+/**
+ * @property int $id
+ * @property Currency $currency_id
+ * @property string $url
+ * @property \DateInterval $frecuency
+ */
+class Source extends Model {
+  protected $currency;
+  public function currency(): ?Currency {
+    if ($this->currency === null) {
+      $this->currency = $this->childOf(Currency::class, [Model::SELF_KEY => 'currency_id']);
+    }
+    return $this->currency;
+  }
+  public function frecuency(\DateInterval $frecuency = null) {
+    if ($frecuency == null) {
+      return new \CarbonInterval($this->fecuency);
+    }
+    $this->frecuency = CarbonInterval::getDateIntervalSpec($frecuency);
+  }
+}