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vendor/symfony/dependency-injection/Loader/Configurator/Traits/BindTrait.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\DependencyInjection\Loader\Configurator\Traits;
+
+use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
+use Symfony\Component\DependencyInjection\Reference;
+
+trait BindTrait
+{
+    /**
+     * Sets bindings.
+     *
+     * Bindings map $named or FQCN arguments to values that should be
+     * injected in the matching parameters (of the constructor, of methods
+     * called and of controller actions).
+     *
+     * @param string $nameOrFqcn A parameter name with its "$" prefix, or a FQCN
+     * @param mixed  $valueOrRef The value or reference to bind
+     *
+     * @return $this
+     */
+    final public function bind($nameOrFqcn, $valueOrRef)
+    {
+        $valueOrRef = static::processValue($valueOrRef, true);
+        if (isset($nameOrFqcn[0]) && '$' !== $nameOrFqcn[0] && !$valueOrRef instanceof Reference) {
+            throw new InvalidArgumentException(sprintf('Invalid binding for service "%s": named arguments must start with a "$", and FQCN must map to references. Neither applies to binding "%s".', $this->id, $nameOrFqcn));
+        }
+        $bindings = $this->definition->getBindings();
+        $bindings[$nameOrFqcn] = $valueOrRef;
+        $this->definition->setBindings($bindings);
+
+        return $this;
+    }
+}