Gradle Recipe AddDependency does not support project dependency

When trying to add a Gradle project as API dependency as in api(project(':subproject')) via the org.openrewrite.gradle.AddDependency recipe, the following exception occurs:

Exception while visiting project file 'project/build.gradle', caused by: java.lang.IllegalArgumentException: Invalid count parameter: 4, at org.openrewrite.gradle.util.DependencyStringNotationConverter.assignValue(DependencyStringNotationConverter.java:68)
	at app//org.openrewrite.TreeVisitor.visit(TreeVisitor.java:324)
	at app//org.openrewrite.TreeVisitor.visitAndCast(TreeVisitor.java:356)
	at app//org.openrewrite.java.JavaVisitor.visitRightPadded(JavaVisitor.java:1274)
	at app//org.openrewrite.java.JavaVisitor.lambda$visitBlock$4(JavaVisitor.java:367)
	at app//org.openrewrite.internal.ListUtils.lambda$map$0(ListUtils.java:145)
	at app//org.openrewrite.internal.ListUtils.map(ListUtils.java:126)
	at app//org.openrewrite.internal.ListUtils.map(ListUtils.java:145)
	at app//org.openrewrite.java.JavaVisitor.visitBlock(JavaVisitor.java:366)
	at app//org.openrewrite.groovy.GroovyIsoVisitor.visitBlock(GroovyIsoVisitor.java:112)
	at app//org.openrewrite.groovy.GroovyIsoVisitor.visitBlock(GroovyIsoVisitor.java:24)
	at app//org.openrewrite.java.tree.J$Block.acceptJava(J.java:777)
	at app//org.openrewrite.java.tree.J.accept(J.java:64)
	at app//org.openrewrite.TreeVisitor.visit(TreeVisitor.java:276)
	at app//org.openrewrite.TreeVisitor.visitAndCast(TreeVisitor.java:356)
	at app//org.openrewrite.java.JavaVisitor.visitLambda(JavaVisitor.java:741)
	at app//org.openrewrite.groovy.GroovyIsoVisitor.visitLambda(GroovyIsoVisitor.java:228)
	at app//org.openrewrite.groovy.GroovyIsoVisitor.visitLambda(GroovyIsoVisitor.java:24)
	at app//org.openrewrite.java.tree.J$Lambda.acceptJava(J.java:2990)
	at app//org.openrewrite.java.tree.J.accept(J.java:64)
	at app//org.openrewrite.TreeVisitor.visit(TreeVisitor.java:276)
	at app//org.openrewrite.TreeVisitor.visitAndCast(TreeVisitor.java:356)
	at app//org.openrewrite.java.JavaVisitor.visitRightPadded(JavaVisitor.java:1274)
	at app//org.openrewrite.java.JavaVisitor.lambda$visitContainer$33(JavaVisitor.java:1327)
	at app//org.openrewrite.internal.ListUtils.lambda$map$0(ListUtils.java:145)
	at app//org.openrewrite.internal.ListUtils.map(ListUtils.java:126)
	at app//org.openrewrite.internal.ListUtils.map(ListUtils.java:145)
	at app//org.openrewrite.java.JavaVisitor.visitContainer(JavaVisitor.java:1327)
	at app//org.openrewrite.java.JavaVisitor.visitMethodInvocation(JavaVisitor.java:862)
	at app//org.openrewrite.groovy.GroovyIsoVisitor.visitMethodInvocation(GroovyIsoVisitor.java:248)
	at app//org.openrewrite.gradle.AddDependency$1.visitMethodInvocation(AddDependency.java:158)
	at app//org.openrewrite.gradle.AddDependency$1.visitMethodInvocation(AddDependency.java:155)
	at app//org.openrewrite.java.tree.J$MethodInvocation.acceptJava(J.java:3716)
	at app//org.openrewrite.java.tree.J.accept(J.java:64)
	at app//org.openrewrite.TreeVisitor.visit(TreeVisitor.java:276)
	at app//org.openrewrite.TreeVisitor.visitAndCast(TreeVisitor.java:356)
	at app//org.openrewrite.groovy.GroovyVisitor.lambda$visitCompilationUnit$0(GroovyVisitor.java:52)
	at app//org.openrewrite.internal.ListUtils.lambda$map$0(ListUtils.java:145)
	at app//org.openrewrite.internal.ListUtils.map(ListUtils.java:126)
	at app//org.openrewrite.internal.ListUtils.map(ListUtils.java:145)
	at app//org.openrewrite.groovy.GroovyVisitor.visitCompilationUnit(GroovyVisitor.java:52)
	at app//org.openrewrite.groovy.GroovyIsoVisitor.visitCompilationUnit(GroovyIsoVisitor.java:27)
	at app//org.openrewrite.gradle.AddDependency$1.visitCompilationUnit(AddDependency.java:215)
	at app//org.openrewrite.gradle.AddDependency$1.visitCompilationUnit(AddDependency.java:155)
	at app//org.openrewrite.groovy.GroovyVisitor.visitJavaSourceFile(GroovyVisitor.java:42)
	at app//org.openrewrite.groovy.GroovyIsoVisitor.visitJavaSourceFile(GroovyIsoVisitor.java:57)
	at app//org.openrewrite.groovy.GroovyIsoVisitor.visitJavaSourceFile(GroovyIsoVisitor.java:24)
	at app//org.openrewrite.groovy.tree.G$CompilationUnit.acceptGroovy(G.java:182)
	at app//org.openrewrite.groovy.tree.G.accept(G.java:43)
	at app//org.openrewrite.TreeVisitor.visit(TreeVisitor.java:276)
	at app//org.openrewrite.gradle.AddDependency.lambda$visit$3(AddDependency.java:226)
	at java.base@17.0.6/java.util.Optional.map(Optional.java:260)
	at app//org.openrewrite.gradle.AddDependency.lambda$visit$4(AddDependency.java:155)
	at app//org.openrewrite.internal.ListUtils.lambda$map$0(ListUtils.java:145)
	at app//org.openrewrite.internal.ListUtils.map(ListUtils.java:126)
	at app//org.openrewrite.internal.ListUtils.map(ListUtils.java:145)
	at app//org.openrewrite.gradle.AddDependency.visit(AddDependency.java:154)
	at app//org.openrewrite.RecipeScheduler.scheduleVisit(RecipeScheduler.java:313)
	... 90 more
Caused by: java.lang.IllegalArgumentException: Invalid count parameter: 4
	at org.openrewrite.gradle.util.DependencyStringNotationConverter.assignValue(DependencyStringNotationConverter.java:68)
	at org.openrewrite.gradle.util.DependencyStringNotationConverter.parse(DependencyStringNotationConverter.java:47)
	at org.openrewrite.gradle.util.DependencyStringNotationConverter.parse(DependencyStringNotationConverter.java:22)
	at org.openrewrite.gradle.AddDependency$1.visitMethodInvocation(AddDependency.java:162)
	at org.openrewrite.gradle.AddDependency$1.visitMethodInvocation(AddDependency.java:155)
	at org.openrewrite.java.tree.J$MethodInvocation.acceptJava(J.java:3716)
	at org.openrewrite.java.tree.J.accept(J.java:64)
	at org.openrewrite.TreeVisitor.visit(TreeVisitor.java:276)
	... 146 more

Used version of org.openrewrite:rewrite-gradle is 7.38.0.

Start with org.openrewrite.gradle.AddDependency in AddDependency.java and inspect how it calls DependencyStringNotationConverter.java. Reproduce the failure with api(project(':subproject')) using the reported Gradle setup, then verify that the recipe completes without the invalid-count exception and handles the project dependency correctly.