Added @api tag for documentation

src/Spout/Writer/Style/StyleBuilder.php

@@ -24,6 +24,7 @@ class StyleBuilder
     /**
      * Makes the font bold.
      *
+     * @api
      * @return StyleBuilder
      */
     public function setFontBold()
@@ -35,6 +36,7 @@ class StyleBuilder
     /**
      * Makes the font italic.
      *
+     * @api
      * @return StyleBuilder
      */
     public function setFontItalic()
@@ -46,6 +48,7 @@ class StyleBuilder
     /**
      * Makes the font underlined.
      *
+     * @api
      * @return StyleBuilder
      */
     public function setFontUnderline()
@@ -57,6 +60,7 @@ class StyleBuilder
     /**
      * Makes the font struck through.
      *
+     * @api
      * @return StyleBuilder
      */
     public function setFontStrikethrough()
@@ -68,6 +72,7 @@ class StyleBuilder
     /**
      * Sets the font size.
      *
+     * @api
      * @param int $fontSize Font size, in pixels
      * @return StyleBuilder
      */
@@ -80,6 +85,7 @@ class StyleBuilder
     /**
      * Sets the font color.
      *
+     * @api
      * @param string $fontColor ARGB color (@see Color)
      * @return StyleBuilder
      */
@@ -92,6 +98,7 @@ class StyleBuilder
     /**
      * Sets the font name.
      *
+     * @api
      * @param string $fontName Name of the font to use
      * @return StyleBuilder
      */
@@ -105,6 +112,7 @@ class StyleBuilder
      * Makes the text wrap in the cell if it's too long or
      * on multiple lines.
      *
+     * @api
      * @return StyleBuilder
      */
     public function setShouldWrapText()
@@ -116,6 +124,7 @@ class StyleBuilder
     /**
      * Returns the configured style. The style is cached and can be reused.
      *
+     * @api
      * @return Style
      */
     public function build()