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    <h3>Editing: Declaration.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php declare(strict_types=1);

namespace PhpParser\Builder;

use PhpParser;
use PhpParser\BuilderHelpers;

abstract class Declaration implements PhpParser\Builder {
    /** @var array&lt;string, mixed&gt; */
    protected array $attributes = [];

    /**
     * Adds a statement.
     *
     * @param PhpParser\Node\Stmt|PhpParser\Builder $stmt The statement to add
     *
     * @return $this The builder instance (for fluid interface)
     */
    abstract public function addStmt($stmt);

    /**
     * Adds multiple statements.
     *
     * @param (PhpParser\Node\Stmt|PhpParser\Builder)[] $stmts The statements to add
     *
     * @return $this The builder instance (for fluid interface)
     */
    public function addStmts(array $stmts) {
        foreach ($stmts as $stmt) {
            $this-&gt;addStmt($stmt);
        }

        return $this;
    }

    /**
     * Sets doc comment for the declaration.
     *
     * @param PhpParser\Comment\Doc|string $docComment Doc comment to set
     *
     * @return $this The builder instance (for fluid interface)
     */
    public function setDocComment($docComment) {
        $this-&gt;attributes['comments'] = [
            BuilderHelpers::normalizeDocComment($docComment)
        ];

        return $this;
    }
}
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